1.a. Spermatogenesis - The process by which sperm are formed in the testes.
b. Erection - The enlarged, firm state of the penis which results as the erectile tissies fill with blood.
c. Coitus - Sexual intercourse (the process by which the erect penis enters the vagina).
d. Emission - Movement of the male reproductive secretion toward the urethra.
e. Ejaculation - The movement of the sperm out of the urethra.
f. Semen - A milky-white mixture of the sperm and secretions of the testes, seminal vesicles, prostrate gland, and bulbourethral glands.
g. Secondary sex characteristics - The characteristics which appear at puberty and distinguish men from women. Includes breast development, hair growth patterns, facial shape, body shape, and hair distribution.
h. Puberty - A series of events which transforms a child into a sexually mature adult.
i. Anabolism - All of the synthesis reactions which occur in the body.
j. Catabolism - All of the decomposition reactions which occur in the body.
k. Oogenesis - The production of haploid germ cells by the ovary.
l. Ovulation - The release of the secondary oocyte from a mature follicle.
m. Menopause - The last menopause; the time of life after which a woman no longer ovualtes.
n. Lactation - The process by which female mammals produce and secrete milk to feed their young.
o. Menses - Periodic shedding of uterine endometreosis which results in blood loss from the vagina.
p. Implantation - Attatchment of the blastocyte to the endometrium.
q. Organogenesis - The formation of organs in a developing fetus.
2. a. vas deferens
b. erectile tissue
c. penis
d. glans penis
e. foreskin (prepuce)
f. seminal vessicle
g. prostrate gland
h. bulbourethral gland
i. urethra
j. epididymis
k. testis
l. ovary
m. uterus
n. cervix
o. clitoris
p. vagina
3. Testes, epididymis, vas deferens, male urethra, vagina, uterus, uterine tubes.
4. Sperm forms at a temperature slightly cooler than body temperature.
5. a. 46
b. 46
c. 23
d. 23
e. 23
f. 46
g. 23
h. 46
6. Sertoli cells - forms a liquid-tight barrier around forming spern cells. Leydig cells - secrete testosterone.
7. FSH principally affects the Sertoli cells, LH the Leydig cells.
8. 4 sperm from one spermatocyte, 1 egg from 1 oocyte.
9. Men can continue to produce gametes indefinitely, while women produce a certain number.
10. The follicular stage, ovulation has not yet happened.
11. Endometrium is getting thicker. Beginning luteal phase.
12. The endometrium is sloughed off because the corpus luteum dies and no longer produces estrogen and progesterone.
13. Fraternal twins form from two secondary oocytes,identical twins from one zygote that splits to two during mitosis.
14. Sperm will have an X or a Y chromosome while the egg has only X.
15.a. A zygote is a paired chromosome cell with 23 chromosomes from the sperm and egg each.
b. Cleavage - cell multiplies but remains same size.
c. Morula - looks like a mulberry still in uterine tubes.
d. Blastula - Morula continues to multiply, then hollows out forming the blastocele and trophoblast and inner cell mass.
e. Gastrula - The inner cell mass begins to differentiate.
f. Neurula - The nervous system and organs begin development, embryo is now fetus.
16. Blastula stage.
17. The trophoblast cells of the blastocyte.
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