Exam 3

Which of the following is the CORRECT pairing of a structure with its function? epididymis: production of testosterone endometrium: the usual site of fertilization corpus luteum: production of estrogen and progesterone seminal vesicles: storage of sperm while they mature

corpus luteum: production of estrogen and progesterone

Which of the following structures contains renal corpuscles?

cortex

The presence of protein in the urine indicates which of the following?

damage to the filtration membrane

Atrial natriuretic peptide _____________.

decreases systemic blood pressure

Which of the choices below is not a function of the urinary system?

eliminates solid, undigested wastes and excretes carbon dioxide, water, salts, and heat

The photoreceptors are most tightly packed into a specific part of the retina called the_____________________.

fovea

_____________ stimulates the liver cells to release glucose into the the blood.

glucagon

ACTH injection would cause an increase in the secretion of _____________.

glucocorticoids

Several hormones are synthesized in the hypothalamus and transported to the anterior pituitary gland. The mechanism of transportation from hypothalamus to anterior pituitary gland is through the ________.

hypophyseal portal system

________lowers blood sugar levels; ________raises the level of blood sugar.

insulin; glucagon

Which one of the following is required in the diet in order to produce thyroid hormones?

iodine

Which receptors are responsible for touch, pressure, hearing, and equilibrium?

mechanoreceptors

Which one of the following cells transmit impulses away from the central nervous system to the muscles and other organs?

motor neurons

The functional and structural unit of the kidneys is the ________.

nephron

Which of the following is a chemical signal that diffuses across synapses to convey a message to the next cell?

neurotransmitter

An egg cell that is not fertilized follows which path?

ovary, oviduct, uterus, cervix, vagina

ADH and oxytocin are secreted from the ________pituitary gland.

posterior

Which of the following conditions occurs during repolarization of the membrane?

potassium ions move outside the cell

Pacinian corpuscles sense

pressure

If a person were stranded for two days with virtually no drinking water, you would expect the following to occur.

production of concentrated urine

An individual has been diagnosed with persistent proteinuria (protein in the urine). This condition is due to damage in which one of the following regions of the nephron?

renal corpuscle

Which one of the following spermatogenesis stages develops directly into mature motile sperm?

spermatids

Amyotrophic lateral sclerosis (ALS) is a demyelinating disease that results from nerve damage in the

spinal cord

When urine leaves the kidneys, it enters the___________.

ureter

Which of the following pairs is mismatched? seminiferous tubules: sperm production urethra: sperm passage interstitial cells; male hormone production vas deferens: semen production

vas deferens: semen production

Each gamete contains______________.

23 Chromosomes

Hypersecretion of glucocorticoids is most likely to cause all of the following conditions, EXCEPT: a)Increase of blood glucose levels b) Addison's disease c) Suppression of the inflammatory response d) Cushing's syndrome

Addison's disease

Which of the following structures is NOT part of a spermatozoa?

Cilia

At the beginning of each ovarian cycle, which one of the following hormones causes the development of a primary oocyte?

FSH

______________is a clinical condition caused by hyposecretion of thyroid hormones (T3&T4)

Grave's Disease

______________promotes the synthesis of glycogen .

Insulin

Which of the following statements about glucagon is correct?

It stimulates the breakdown of glycogen to glucose

______________causes release of the egg (ovum) from the ovary.

LH

In saltatory conduction, nerve impulses jump from one exposed region of the axon to another. This exposed region is called the ________.

Node of Ranvier

Select the statement below that does NOT occur during meiosis I.

The sister chromatids are separated from each other.

Each of the following statements correctly describes an action potential EXCEPT which one?

action potentials are propagated by neurotransmitters

Botulism toxin interferes with the fusion of acetylcholine-containing vesicles with the membrane of the axon bulb. This would result in which one of the following?

blocking of neurotransmitter release by the presynaptic membrane

The kidneys are stimulated to produce renin ________.

by a decrease in the blood pressure

Synapse steps:

calcium enters the axon bulb release of neurotransmitter to synaptic cleft neurotransmitter bind with receptors postsynaptic channels open

The opening of the uterus is referred to as the___________________.

cervix

The function of angiotensin II is to ________.

constrict arterioles and increase blood pressure

Which one of the following is CORRECT regarding human gametes (egg and sperm)?

contain the haploid number of chromosomes