ANS3319C Quiz 1 Fall 2011V2_key

ANS3319C Quiz 1 Fall 2011V2_key - ANS 3319C ...

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Unformatted text preview: ANS 3319C Reproductive Physiology & Endocrinology in Domestic Animals Quiz 1 (25 pts: Sept. 9, 2011) Name: _____________________________ Lab _______ 1) Please list the four different anatomical structures that assist in temperature control of the testis (2 pts). a) Tunica dartos c) Pampiniform Plexus b) Skin and sweat glands d) Creamaster 2) Of the structures listed in the question (1), please list the structure composed of arteries and veins and describe its specific function as it relates to temperature control (1 pt). a) It is involved in counter current heat exchange to always make sure that the temperature in the testis is lower than body temperature so that sperm production can be maintained. 3) When an intact male is castrated by cutting the spermatic cord, what three major anatomical structures are severed in the process (1.5 pts)? (Does not include facia/connective tissue and answer to question 2) a) Ductus deferens, blood supply, cremaster muscle, nerves 4) What are the three sections of the epididymis? Please circle the section where sperm are stored (2 pts) a) Head, body, Tail 5) What are the three different accessory glands that can be found in farm and companion animals (1.5 pts)? a) Seminal vesicles, prostate gland, cowpers gland 6) Of the following species, please circle the ones that have a fibroelastice penis (1.5 pts). a) Dog b) Pig c) Horse d) Bull e) Ram f) Human 7) Of the following species, please circle the ones that have a vascular penis (1.5 pts). a) Dog b) Pig c) Horse d) Bull e) Ram f) Human 8) Please fill in the blanks with the most appropriate term (4 pts). The testis functions to make sperm and the steroid hormone testosterone. Sperm are transported from the epididymis and into the vas deferens that is surrounded by extra layers of smooth muscle, which contracts to move sperm to the urethra to mix with seminal fluid secreted from the accessory sex glands. Semen travels the length of the penis by a wave of muscle contractions initiated by the bulbospongiosum muscle. When the glans penis is stimulated by temperature/pressure semen is ejaculated. In the cow, ewe, cat and dog semen is deposited in the fornix vagina and sperm ultimately enter the cervix, a structure that also produces mucous. The next structure sperm encounter is the uterus, a structure that eventually houses the pregnancy. Sperm finally enters the isthmus of the oviduct, while the oocyte is being transported in the ampulla of the oviduct. Eventually, fertilization occurs at the ampullary- isthmus junction. ANS 3319C Reproductive Physiology & Endocrinology in Domestic Animals Quiz 1 (25 pts: Sept. 9, 2011) Name: _____________________________ Lab _______ 9) Please list in the proper order of development, from most immature to most mature, the four stages of follicle development (2 pts). a) Primordial b) Primary c) Secondary c) Tertiary 10) Of the follicles listed in the previous question (9), which has the greatest number of granulosa cells? What is the primary steroid hormone produced by granulosa cells (1 pt)? Tertiary follicles, Estrogen 11) The steroid hormone produced by the type follicle in question (10) stimulates secretion of mucous from the cervix. What are three different functions that the mucous has (1.5 pts)? a) Lubricates vagina b) Sperm transport & reservoir c) Minimizes micro- organisms into uterus 12) Please spell out the name of the ovarian structure that forms after ovulation of the follicle listed in question (10)? What is the steroid hormone that it produces (1 pt)? a) Corpus luteum, progesterone 13) Please describe two functions that the steroid hormone in question (4) has on the uterus of the early pregnant female (1 pt)? a) Blocks myometrial contractions b) Stimulates secretions for the early developing embryo 14) What specific tissue layer of the uterus is responsible for control of the estrous cyclicity and what is the hormone it produces that controls this process (1 pt)? a) Endometrium and prostaglandin F2α 15) What is the significance of the lumen of the caudal vagina being lined with stratified squamous epithelium (1 pt)? a) Thickens the vagina for protection and prevents bacteria into submocosa 16) What is the steroid hormone produced by the testes (0.5 pts)? Testosterone 17) What are four different functions of the hormone listed in question (16) (2 pts)? a) Stimulates secondary sex characteristics b) Stimulates accessory sex gland development c) Stimulates muscle development d) Stimulates reproductive tract function and libido ...
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This note was uploaded on 11/23/2011 for the course ANS 3319C taught by Professor Yelich during the Fall '07 term at University of Florida.

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