Aula com o Professor - Anatomorfofisiologia do Sistema Digest�rio, End�crino, Urin�rio e Reprodutor

Main Ideas / Lessons Conveyed

1) Course Logistics and Classroom Conduct

• The professor opens the “second lesson” focused on:
  • Digestive system (mentioned as prior context)
  • Endocrine system (prior context)
  • Urinary system (today’s focus part)
  • Reproductive system (today’s focus part)
• Students are asked to:
  • Pay full attention
  • Reduce distractions (e.g., WhatsApp groups/side topics)
  • Follow announcements and maintain class discipline

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2) Live Class Access, Timing, and Attendance Procedure (Step-by-Step)

Class time

• Starts at 8:30 PM sharp (Brasília time)

How to access

• Use Microsoft Teams
• Download the Teams app on the device you’ll use (phone/computer/etc.)

Meeting code

• The code to start the lesson is 967
• The code will be pinned to the meeting chat
• It will be posted at 8:30 PM sharp

Attendance (exit/verification code)

• There is a prompt to enter an exit/attendance code and confirm.
• The described flow:
  1. Open LUEP
  2. Select the subject
  3. Mark attendance
  4. Enter the code
  5. Confirm
• Attendance is recorded at the beginning of the class

Recording policy

• Classes are recorded
• Recordings are available on the AVA platform (and later on YouTube/Leb)
• It takes about 24–48 hours for recordings to appear on all platforms
• The professor asks whether last week’s recording appeared correctly

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3) Learning Pathway Expectations (Study Before Class)

• The course is described as theoretical and requires memorization of:
  • Names of structures
  • Locations and functions
• Students should:
  • Read materials before the live class
  • Bring questions to class chat
• The learning path includes:
  • The textbook
  • Activities to reinforce learning during the week

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4) Assessments Structure and Deadlines (With a Timeline)

• Students are reminded that:
  • Assessment 3 (Professional Challenge) has been available since the first week (last week)

Multi-week assessment schedule

• Professional Challenge
  • Starts last week
  • Runs until the 4th week
• Another assessment (mentioned as “continuing until the 3rd week” in the discussion context)
  • Begins around week 3
• Assessment 2
  • Begins in week 3
  • Runs until the 4th week
• Week 4
  • Closing of Assessment 2 and Assessment 3
  • Students take a final in-person assessment at the center

Final exam scheduling

• Students must schedule the exam at the center as soon as possible
• Missing deadlines makes it “more difficult” to catch up

Where to find dates

• Grades and assessments section on the platform
• Academic calendar for additional dates (e.g., second chances)

Passing grade

• Must reach 7 to pass

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5) Extension vs. Complementary Activities (Mandatory Hours and How to Track Them)

A) Extension Activities

• Definition
  • Mandatory
  • Has social/community impact
  • Typically performed in the community
• Where to access
  • In the student virtual environment (main menu), click “extension”
• Workload contribution
  • Accounts for 10–15% of total course workload
  • Each course has its own number of hours
• How to know your required hours
  • Navigate:
    • Main menu → My Courses → View complete curriculum matrix
  • A table shows required hours for:
    • Extension activities
    • Complementary activities
• Examples mentioned by the professor
  • Complementary example: 40 hours
  • Extension example: 180 hours

B) Complementary Activities

• Definition
  • Includes courses/lectures/workshops/live streams/events such as:
    • Conferences
    • Optional internships
  • Counts as complementary hours
• Validation rule
  • Anything that provides a certificate with hours/course hours can be submitted for validation
• Time restriction
  • Must be done during the graduation period
  • Cannot be done before that period
• Relevance rule
  • Must relate to the student’s course of study / field
  • Example logic: if studying nutrition, a nutrition-related live stream with a certificate can be submitted

C) Submitting Work to Joia (Registration Notice)

• Students who presented papers/projects at Uncelva can submit to Joia
• Must register
• Deadline: September 30th
• The event may provide an opportunity for later publication in a journal
• Students are invited to contact the professor for registration for Joia 2026

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6) Classroom Atmosphere and Emotional Check-in

• The mediating/supervising professor leads an emotional check-in in the style of “Monica’s Gang”
• Emotional states mentioned: calm, happy, tired, anxious, sad (including a personal note about mourning for a grandfather), irritated
• Motivational reminder:
  • Discipline now becomes freedom later
  • Knowledge learned is personal and cannot be taken away

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Biology / Anatomy Content (Urinary System Focus + Reproductive System Focus)

7) Urinary System: Anatomy and Structures (Kidneys → Ureters → Bladder → Urethra)

Key anatomical locations and orientation

• Kidneys
  • Reddish-brown
  • Located on the posterior abdominal wall
  • Between T12 and L3
  • Right kidney is typically lower due to liver position
  • Retroperitoneal (outside the peritoneal cavity)
• Kidney shape
  • Bean-like
  • Variant mentioned: horseshoe kidney

Renal hilum (major concept)

• The renal hilum is a concave medial depression where:
  • Renal artery and renal vein enter/exit
  • Nerves and lymphatic connections are also present

Kidney coverings and layers (macroscopic)

• Each kidney is surrounded by a fibroadipose sac (concept of fat/capsule)
• Capsule layers discussed:
  • Renal capsule (fibrous)
  • Additional fibrous/transparent strong inner layer
• Cortex and medulla
  • Cortex = outermost region
  • Medulla = inner region; more granular and darker due to capillaries/tubules
• Renal pyramids
  • 8 to 15 conical pyramids
  • Apex = renal papilla, where urine drains
  • Base is wider; pyramids point toward the internal kidney region

Urine flow pathway (structural chain)

• Renal papilla → minor calyx
• Minor calyces → form major calyx
• Major calyx → renal pelvis
• Renal pelvis → ureter
• Ureter → bladder
• Bladder → urethra → urination

Ureters and obstruction note

• Ureters are described as channels/organs that carry urine
• Length mentioned: ~30 cm
• Clinical note:
  • Obstruction can be associated with stones
  • Comparison made to biliary lithiasis (gallbladder stones) and renal lithiasis (kidney stones)
• Imaging/positioning concept:
  • If urine retention occurs during renal/ureter imaging, a prone position may aid drainage

Bladder (urinary bladder)

• Location
  • Behind the pubic symphysis
  • Anterior to the rectum (later differences noted for females)
• Shape depends on volume
  • Empty: pyramidal
  • Filled: ovoid with upward protrusion into abdominal cavity
• Capacity
  • Average: ~700–800 mL
  • Possible reports: up to ~1.5 L
• Muscular and distensible (smooth muscle)
• Female vs male relations:
  • Female: contact with uterus and vagina
  • Male: prostate is located below the bladder

Urethra (length and sex differences)

• Women
  • Shorter urethra: about 4 cm
  • Opens between labia minora
• Men
  • Longer urethra: about 20 cm (average)
  • Passes through the penis

Catheterization relevance (practical nursing note)

• Nursing students must understand:
  • Where to insert a catheter
  • Where to inflate the balloon (inside the bladder)
• Warning:
  • Inflating the balloon inside the urethra can cause obstruction and compromise function
• Pathophysiology link:
  • Inflamed prostate → obstruction → urinary retention
  • May require cystostomy
• Definition in context:
  • Cystostomy = draining urine through an external abdominal opening instead of via the urethra

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8) Reproductive System: Anatomy Overview (Female and Male) + Embryology/Genetics Basics

General similarities and embryologic basis

• Male and female genital systems develop from similar embryonic tissues
• Therefore, organs are homologous
• Organs develop gradually and become functional during puberty
  • Puberty roughly 10–12 up to 14
  • Average referenced: ~12

Germ cells vs. somatic cells (concept)

• Reproductive organs contain:
  • Germ cells (produce gametes)
  • Somatic cells elsewhere in the body
• Gametes:
  • Eggs (ova) and sperm
• Sex hormones:
  • Estrogens and progesterone (female)
  • Testosterone and androgen-related roles (male)

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9) Female Reproductive System (Anatomy + Cycles)

Ovaries

• Produce gametes and hormones
• Hormones: estrogens and progesterone
• Size (approx.): 3.5 cm long, 2 cm wide, 1 cm thick
• Follicle maturation and ovulation:
  • Ovulation: rupture and release of a secondary egg
  • Ruptured follicle becomes corpus luteum

Fallopian tubes (uterine tubes)

• Approx. 10 cm
• Terminal part funnel-shaped: infundibulum
• Ciliated epithelium helps transport the egg toward the uterus
• Clinical concept:
  • If implantation occurs outside the uterus → ectopic pregnancy
  • Locations suggested:
    • Outside the uterus overall
    • Potentially within the fallopian tube itself

Uterus (structure and function)

• Location: between bladder and rectum
• Approx. size: ~7.5 cm length, 5 cm width, 2.5 cm thickness (varies with pregnancy/menopause)
• Uterine wall layers:
  • Perimetrium (outer)
  • Myometrium (muscular middle; key for contractions)
  • Endometrium (inner lining rich in glands)
• Role in birth:
  • Active contractions during childbirth
• Preventive exam:
  • Pap smear involves sampling from the cervix

Vagina and vulva

• Vagina
  • Tubular fibromuscular organ
  • Approx. ~9 cm long
  • Functions: sperm deposition pathway, menstrual passage, childbirth birth canal
• Vulva (external genitalia)
  • Includes labia (major/minor), clitoris, vestibule structures
  • Bartholin’s glands mentioned for lubrication
• Hymen mentioned as partially closing the opening
• Preventive exam sensitivity notes referenced generally (e.g., children abuse/Down syndrome contexts)

Ovarian/menstrual cycle phases (detailed phases)

• Cycles repeat roughly monthly; the professor corrected a misunderstanding about “exactly on the same calendar day”
• Phases and durations:
  • Follicular phase
    • Begins day 1 of menstruation
    • Lasts ~5–12 days
    • Increased FSH
    • Estrogen rises to prepare uterine lining
  • Ovulatory phase
    • Rising estrogen increases LH
    • Most mature egg is released from the ovary
  • Luteal phase
    • Typically ~12 days
    • Increased progesterone production
    • Prepares uterine lining for possible pregnancy
• Menstruation
  • Shedding of functional endometrium triggered by hormone changes

Pregnancy hormones (final summary concepts)

• hCG: maintains corpus luteum progesterone early in pregnancy
• Placental lactogen: supports glucose availability (via insulin-related effects)
• Melanotropic hormone: stimulates melanin release
• Estrogen and progesterone
  • Sodium balance changes and uterine smooth muscle effects
  • Progesterone relaxes smooth muscle; estrogen promotes uterine muscle proliferation

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10) Male Reproductive System (Anatomy + Roles)

Organs and transport ducts

• Accessory glands:
  • Seminal vesicles
  • Prostate
  • Bulbourethral (Cowper’s) glands
• Sperm transport pathway:
  • Epididymis → vas deferens → ejaculatory ducts → urethra
• Shared passageway:
  • Penis and urethra carry urine and semen (functional separation during erection)
• Scrotum
  • Skin pouch protecting testes

Testes (gonads) and spermatogenesis

• Testes produce sperm
• Sertoli and interstitial cell roles noted (support and hormone-related functions)
• Testosterone role in secondary sex characteristics
• Spermatogenesis steps:
  • Mitotic division → primary spermatocyte
  • Meiotic division → secondary spermatocytes
  • Meiotic completion → spermatids
  • Spermatids mature into spermatozoa

Temperature and sperm production environment

• Testes are outside the body for temperature regulation
• Temperature maintained about 1–3°C below body temperature

Bulbourethral gland function

• Neutralize acidic urethral environment during arousal
• Protect sperm viability and motility

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11) Urinary System Physiology (Kidney and Nephron Functions)

Kidney functional overview

• Main roles of urinary system:
  • Filter blood and form urine
  • Passage/storage functions for urine
  • Contribute to homeostasis (fluids, ions, osmolarity, pH, blood volume)
  • Regulate:
    • Blood pressure
    • Hormone release
    • Blood glucose regulation (mentioned as kidney-related)
  • Excrete waste products and foreign substances

Nephrons as functional units (core mechanism)

• Each kidney has about ~1 million nephrons (more than 1 million mentioned)
• Nephron components (conceptual):
  • Renal corpuscle / glomerulus and glomerular capsule (Bolman’s capsule mentioned)
  • Proximal tubule, distal tubule, collecting duct
• Steps:
  • Filtration produces filtrate (capillary filtration)
  • Filtrate is modified through transport processes:
    • Absorption/recovery vs excretion
  • Final product becomes urine
• Peritubular capillaries/vasa recta:
  • Support absorption-related processes (rather than filtrate formation)

Kidney protection and injury note

• Retroperitoneal kidneys are protected but can be injured by blows to lumbar region
• Injury can cause hematuria (blood in urine)

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12) Sexual Reproduction Physiology and Endocrinology/Genetics Basics

Gametogenesis and fertilization

• Gametes formed in gonads:
  • Spermatogenesis in testes
  • Oogenesis in ovaries
• Chromosome numbers:
  • Somatic cells: 46
  • Gametes: 23 (half via meiosis)
  • Fertilization → zygote: 46 (23 from each parent)
• Zygote development:
  • Mitotic divisions until puberty maturity when meiosis resumes

Hypothalamus–pituitary–gonad axis (GnRH / FSH / LH)

• Hypothalamus releases GnRH
• Pituitary releases:
  • FSH
  • LH
• Effects on gonads:
  • Stimulate gametogenesis (spermatogenesis/oogenesis)
  • Stimulate hormone secretion
  • Maintain gonad structure
• Timing concept:
  • Gonadotropins low after birth, rises with puberty
  • Differences in maturation timing between girls and boys were mentioned
• Puberty growth spurt:
  • Earlier in girls

Spermatogenesis and oogenesis timelines (quantitative facts)

• Oogenesis facts:
  • Newborn girls: ~2 million eggs
  • Puberty: drops to ~300,000–400,000
  • Ovulated during reproductive life: ~~400 eggs (average mentioned)
• Oogenesis outline:
  • Primary oocytes diploid (46)
  • Meiosis produces haploid gametes
  • Polar bodies form during meiosis
  • Fertilization forms zygote

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Speakers / Sources Featured (As Mentioned in Subtitles)

1. Professor Gabriel (main instructor)
2. Supervising/mediating professor (partner in the class; unnamed in subtitles)
3. Professor’s “father” (quoted motivational statement referenced indirectly)
4. Monica’s Gang (Turma da Mônica) (used as reference for the emotional check-in characters)
5. Textbook / course materials (learning path sources; no specific author named)
6. Uncelva / Unha Selv (institution mentioned in announcements)
7. (Submission note refers to) Joia 2026 and Joia opportunities (registration mentioned)