Lab 12: Basic Mammalian Anatomy IIintrobiolab.weebly.com/uploads/8/7/8/6/8786896/lab... · Basic...
Transcript of Lab 12: Basic Mammalian Anatomy IIintrobiolab.weebly.com/uploads/8/7/8/6/8786896/lab... · Basic...
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Lab 12: Basic Mammalian Anatomy II
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Complete all sections
• 19.1 – Urinary system
• 19.2 – Male reproductive system
• 19.3 – Female reproductive system
• 19.4 – Anatomy of Testis and Ovary
• 19.5 – Review: Respiratory, Digestive, and Cardiovascular systems
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Urinary system
• Kidneys – filters blood by removing excess water and urea & balancing salts. Produces urine.
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Urinary system
• Ureters – conduits that carry urine from each kidney to the bladder.
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Urinary system
• Urinary bladder – stores urine
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Urinary system
• Urethra – conduit for urine to leave the body
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Anatomy of a kidney
• Renal artery brings blood into the kidney
• Blood is forced into a system of small tubules called nephrons which is where filtration takes place
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Anatomy of a kidney
• Nephrons are located in the renal cortex and renal medulla
• Collecting ducts bring the urine into the renal pelvis
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Anatomy of a kidney
• The urine collecting in the renal pelvis then drains into the ureter.
• Finally, filtered blood exits the kidney via the renal vein.
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Male reproductive system
1. Testes – produce sperm and testosterone
2. Epididymus – stores sperm as they mature
3. Vas deferens – stores and carries sperm toward urethra
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Male reproductive system
4. Seminal vesicles – sacs attached to bladder, contributes fluid to sperm that contains sugar, proteins, etc.
5. Prostate gland – below the bladder, surrounds the urethra; contributes more fluid to semen
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Male reproductive system
6. Bulbourethral glands – found below the prostate; contributes mucus to the semen (before the sperm) to flush out acidity in the urethra
7. Urethra – carries semen out of the body
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Female reproductive system
• Ovary – produces egg and female sex hormones: estrogen and progesterone
• Oviduct (fallopian tube) – carries egg toward uterus
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Female reproductive system
• Uterine horns (pigs) – where the uterus and oviducts meet
• Uterus – where the fetus develops during gestation
• Vagina – birth canal
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Anatomy of testis
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Anatomy of ovary
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Support cells in the gonads
Interstitial cells:
• produce testosterone
• found in the spaces between the seminiferous tubules
Follicles:
• Enclose developing egg
• Produce estrogen/progesterone
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Hepatic Portal System
The hepatic portal system is a system of veins that transport the nutrients from food to the heart.
Nutrients are absorbed from food in the small intestines and pass through the hepatic portal vein to the liver.
Leaving the liver the nutrients go into the inferior vena cava.
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Which empties into inferior vena cava
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