practice exam 3

Question 1

autocrine secretion occurs when chemical messengers are released from one cell and diffuse to nearby cells in the same tissue, which stimulates their physiology

Answer 1

false

Question 2

there are either no or very few nerve going to the anterior pituitary gland from the hypothalamus only blood vessels called the hypophyseal portal system

Answer 2

true

Question 3

the adrenal cortex is responsible for the secretion of epinephrine and norepinephrine

Answer 3

false

Question 4

testosterone in males and progesterone in females exert a negative feedback loop in order to slow production of their respective hormones

Answer 4

true

Question 5

luteinizing hormone’s target organs are the ovaries and testes

Answer 5

true

Question 6

the medulla of the ovary produces ova

Answer 6

false

Question 7

the paramesonephric duct will develop into the reproductive tract in a male fetus

Answer 7

false

Question 8

woman …

Answer 8

mulliarian

paramesonephric duct

Question 9

male…

Answer 9

mesonephric

woffian

Question 10

in the process of producing sperm spermatogonia will go through two rounds of mitosis and 1 round of meiosis

Answer 10

false

Question 11

the genital tubercle of a male fetus will eventually develop into the glands or head of the penis

Answer 11

true

Question 12

a sperm count of 20 to 25 million sperm/mL or lower is associated with infertility in males

Answer 12

true

Question 13

the protein pepsinogen is responsible for the breakdown of ingested carbohydrates

Answer 13

false

Question 14

at the time of birth a female neonate will have approximately 5-7 million oocytes

Answer 14

false

Question 15

neonate has

Answer 15

1-2 million oocytes

Question 16

after meiosis I occurs during oogenesis the smaller daughter cell known as the first polar body disintegrates and dies

Answer 16

true

Question 17

a menstrual cycle begins with a 2 week period known as the luteal phase

Answer 17

false

Question 18

a menstrual cycle begins with a 2 week period known as the ….

Answer 18

follicular phase

Question 19

when ovulation occurs, the levels of luteinizing hormones are significantly higher than follicle stimulating hormone levels

Answer 19

true

Question 20

in conditions of starvation, the liver will help support blood glucose levels by synthesizing glucose from amino acids

Answer 20

true

Question 21

all TRUE EXCEPT about adrenocorticotropic hormone:

a. released under stress
b. it is a steroid
c. responsible for secretion of glucocorticoids
d. it is target organ is the adrenal cortex
e. none

Answer 21

NOT true adrenocorticotropic hormone

it is a steroid

Question 22

adrenocorticotropic hormone released under stress

Answer 22

true

Question 23

adrenocorticotropic hormone responsible for secretion of glucocorticoids

Answer 23

true

Question 24

adrenocorticotropic hormone it is target organ is the adrenal cortex

Answer 24

true

Question 25

in a clinical or physiological stress response, what happens: a. an increase in corticotrophin releasing hormone being released b. an increase in cortisol release c. an increase in the release of adrenocorticotropic hormone

Answer 25

all of the above

Question 26

an increase in the secretion of mainly cortisol will cause a person to gain weight, loss muscle mass and have a suppressed immune system this disorder is known as: a. hyperthyroidism b. grave's disease c. cushing's syndrome d. hypothyroidism e. none of the above

Answer 26

an increase in the secretion of mainly cortisol will cause a person to gain weight, loss muscle mass and have a suppressed immune system this disorder is known as: cushing's syndrome

Question 27

excess thyroid hormones are stored in the thyroid in this form: a. tri-iodothyronine (T3) b. thyroixine (T4) c. Thyroglobulin d. thyrogon e. a & b

Answer 27

excess thyroid hormones are stored in the thyroid in this form: thyroixine (T4)

Question 28

chemical digestion of carbohydrates begins here: a. mouth b. stomach c. duodenum d. jejunum e. ileum

Answer 28

chemical digestion of carbohydrates begins here: mouth

Question 29

during spermiogenesis a spermatid does which: d. both A & C a. divides into 4 haploid cells b. the acrosomal vesicle and flagellum appears c. excess cytoplasm is shed e. both B & C

Answer 29

during spermiogenesis a spermatid does which: the acrosomal vesicle and flagellum appears excess cytoplasm is shed

Question 30

the function of semen to: a. protect the pH level of the vagina b. provide calcium to the uterine wall to increase uterine muscular contractions in order to move the semen c. provide additional nutrients to a potential zygote d. all of the above e. none of the above

Answer 30

none would be true if sperm not femal system

Question 31

the fucntion of the SRY gene on the Y chromosome to: a. lead to development of the testes by encoding for protein TDF (testes determining factor) b. change a Y chromosome to an X chromosome c. secrete testosterone d. secrete the hormone MIF (mullerian-inhibiting factor) e. none

Answer 31

the fucntion of the SRY gene on the Y chromosome to: lead to development of the testes by encoding for protein TDF (testes determining factor)

Question 32

TRUE turner's syndrome: a. there is a cure b. 99% of fetuses with turner's syndrome are spontaneously aborted during the first trimester c. the genotype for Turner's syndrome is XXO d. turner's syndrome will produce an abnormal fat deposit on the back giving the person a humpback appearance e. none

Answer 32

TRUE turner's syndrome: 99% of fetuses with turner's syndrome are spontaneously aborted during the first trimester

Question 33

the cells which are responsible for nourishing the developing sperm within the testes are the a. Leydig cells b. type A spermatogonium c. type B spermatogonium d. sertoli cells e. none of the above

Answer 33

the cells which are responsible for nourishing the developing sperm within the testes are the sertoli cells

Question 34

Thelarche, one of the stages of puberty for girls, is defined: a. the first period b. the appearance of pubic hair c. breast formation d. the onset of acne e. none

Answer 34

Thelarche, one of the stages of puberty for girls, is defined: breast formation

Question 35

which of the following hormones exerts the highest influence during the majority of prego: a. Luteinizing hormone b. progesterone c. oxytocin d. follicle stimulating hormone e. none

Answer 35

which of the following hormones exerts the highest influence during the majority of prego: b. progesterone

Question 36

the production of glycogen from glucose is known as: a. glycogenolysis b. glycogenesis c. gluconeogenesis d. glycolysis

Answer 36

the production of glycogen from glucose is known as: glycogenesis

Question 37

with the cessation of menstruation, a decrease in estrogen and progesterone secretion occurs. Associated with this secretion decrease is: a. atrophy of breast, uterine, and vaginal tissue b. a decrease in bone mass c. sporadic, non-homeostatic constriction and dilation of blood vessels d. all of the above e. none of the above

Answer 37

all of the above