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Quiz 5
Rat Disection
| Question | Answer |
|---|---|
| what shape are kidneys? | bean shaped |
| kidneys are covered by a membrane called what? | peritoneum |
| what artery and vein lead to each kidney? | renal vein and renal artery |
| what do the renal arteries and veins do? | transport blood to and from the kidneys |
| what do the kidneys do? | function in the excretion of hydrophilic substances such as ions, water,urea and other nitrogenous wastes. |
| how do kidneys play a role in homeostasis? | by regulating the volume and composition of blood |
| the ureter leads to the _____ out through the _____, then out to the external environment through the ________. | urinary bladder, urethra, urogenital opening |
| what is dominance based on? | large size and weight |
| sexual maturity as early as what? | 3 months of age |
| how many litters per year with an average of how many young? | 12 litters per year and an average of 8 young |
| the female rat has the potential to produce how many young each year? | 96 young |
| gestation period usually last how long? | ~22 days |
| at birth the young are what? | naked and helpless |
| when do baby rats open their eyes? | after ~15 days |
| when are baby rats weaned? | at ~3 weeks old |
| Vena Cava | transports deoxygenation blood from the extremities to the right atrium,. joins kidneys though the renal veins |
| aorta | supplies highly oxygenated blood into the lower extremities of the body. joins the kidneys through the renal arteries |
| adrenal gland | produces hormones "flight or fight" response |
| ureter | transports urine to the urinary bladder |
| vas deferens | transports sperm from the epididymis to the urethra |
| Cowper's gland | produce seminal fluid |
| epididymis | coils around the testes and functions to store sperm |
| testis | production of sperm |
| penis | extends from the urethra. passageway for both sperm and urine |
| scrotum | houses the testis ~3 degrees below the body temperature. sperm survival depends on this lower temperature |
| urethra | transports urine from the urinary bladder to the urogenital opening. in males the penis and in female the clitoris |
| fatty tissue | will appear slippery and be cream in color |
| urinary bladder | urine is stored |
| uterine horn | "Y" of the uterus that connect it with the oviducts. fetus develops |
| uterus | egg implants and grows from an embryo to a fetus |
| vagina | receives the penis during copulation |
| clitoris | analogous to the male penis. In the rat, unlike other mammals, it is associated with the urethra |
| vaginal orifice | entrance to the vagina |
| oviduct | Fallopian tube. transports eggs from the ovary to the uterine horn. site of fertilization |
| ovary | site of oogenesis (creation of eggs) production of the hormones, progesterone and estrogen. |
Created by:
Gabby.Cruz5
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