Reference no: EM133929837
Questions
1. When a neuron generates an action potential, what happens to the potassium ions?
a. The concentration of potassium ions becomes greater outside the neuron than inside it
b. The concentration of potassium ions becomes greater inside the neuron than outside it
c. The concentration of potassium ions becomes equal inside and outside the neuron
d. Nothing - potassium ions are not involved in action potentials
2. Which of the following would cause a decrease in the hypothalamic temperature set point for metabolic heat production?
a. Going into a chilly environment
b. Taking Aspirin when you have a fever
c. Waking up from hibernation
d. Getting an infection that causes a fever
e. Cooling the hypothalamus
3. The collecting ducts in the kidney
a. can actively transport water molecules actively into the urine
b. are responsible for most of the reabsorption of water that occurs in the kidney
c. determine to a large extent the final osmolality of urine
d. are rendered impermeable to water by aldosterone
4. Which part of the neuron undergoes depolarization?
a. Axon
b. Dendrite
c. Cell Body
d. Schwann cell
e. Myelin Sheath
5. Which of the following endocrine glands is a direct extension of the nervous system?
a. Anterior pituitary gland
b. Posterior pituitary gland
c. Thyroid gland
d. Thymus gland
e. Adrenal cortex
6. Metabolic homeostasis concerns the thyroid gland. The thyroid is regulated by feedback loops involving which of the following?
a. the pituitary gland and two hormones
b. the hypothalamus, pancreas, and four hormones
c. the hypothalamus, the pituitary, and three hormones
d. the Islets of Langerhans and three hormones
e the adrenal cortex and three hormones
7. Long term stress often results in higher blood sugar levels. This may result in all but one of the following complications:
a. lower calcium levels in the bones
b. increased urine volume
c. increased blood pressure
d. increased susceptibility to type II diabetes
8. A positive feedback mechanism regulates which of the following hormone?
a. Thyroxine
b. Insulin
c. TSH
d. Oxytocin
9. Following an action potential, during which period is the neuronal membrane incapable of responding to another stimulus?
a. Threshold potential
b. Action potential
c. Resting potential
d. Refractory period
e. Depolarization
10. What is the function of FSH in males?
a. FSH is not produced in males; it is a female hormone
b. FSH stimulates the development of sperm in the testes
c. FSH is directly responsible for facial hair growth, which begins at puberty
d. FSH stimulates the release of semen from the prostate gland during ejaculation
e. FSH is produced by the hypothalamus
11. The following structures are part of the nephron. In which of these structures is water re-absorbed?
I. Proximal Tubule
II. Distal Tubule
III. Descending limb of the loop of henle
IV. Ascending limb of the loop of henle
V. Collecting duct
a. I only
b. I and II only
c. I, II and III only
d. I, II, III and IV only
e. I, II, III and V only
12. People who experience chronic stress are prone to becoming ill. What contributes to chronic stress?
a. Low levels of ACTH and high levels of cortisol
b. High levels of ACTH and cortisol
c. Low levels of ACTH and aldosterone
d. Low levels of cortisol and high levels of aldosterone
e. Low levels of ADH and ACTH
13. A patient with symptoms of tremors, an irregular walk, and halting speech might have experienced trauma to which of the following?
a. Cerebrum
b. Thalamus
c. Pons
d. Cerebellum
e. Hypothalamus