Bio250 Practice Exam 2 Questions with
Accurate Solutions
The ossicles connect the - ANSWER Tympanic membrane to the oval window
Steroid hormones - ANSWER all of the above
Many medications introduced into the blood stream cannot directly affect the neurons of the
CNS because - ANSWER The lining of the capillaries in the CNS forms a blood-brain barrier
The following are the steps involved in a reflex arc. Determine the correct order:
1. Activation of a sensory neuron
2. Activation of a motor neuron
3. Response by an effector
4. Arrival of a stimulus and activation of a receptor
5. Information processing - ANSWER 4, 1, 5, 2, 3
The interstitial cells of the testes produce - ANSWER Testosterone
The hormone that is the antagonist of calcitonin is - ANSWER Parathyroid hormone (PTH)
The term general senses refers to sensations of - ANSWER All of the above
The primary motor area is located in the region of the - ANSWER Precentral gyrus
A blind spot in the retina occurs where - ANSWER The optic nerve attaches to the retina
, The corpus callosum is composed of - ANSWER Commissural fibers
The hypothalamus controls the secretions of the anterior pituitary by way of - ANSWER
Releasing and inhibiting hormones
A cell's ability to respond to a hormone is determined by - ANSWER The presence or absence of
appropriate receptors
Each of the following is an ascending tract in the spinal cord except one. Identify the exception.
A. Fasciculus gracilis
B. Fasciculus cuneatus
C. Posterior spinocerebellar
D. Corticospinal tract
E. Anterior spinothalamic - ANSWER D, corticospinal tract
Follicle cells in the ovary produce large quantities of *blank* when stimulated
by gonadotropins. - ANSWER Estrogen
The movement of the head in the direction of a loud noise is coordinated in the
mesencephalon. Which nuclei are likely involved in this process? - ANSWER Inferior colliculi
Cholinergic neuroeffector junctions release the neurotransmitter - ANSWER Acetylcholine
Each of the following hormones is produced by the anterior pituitary except one. Identify
the exception.
A. FSH
B. ADH
C. TSH
D. ACTH
Accurate Solutions
The ossicles connect the - ANSWER Tympanic membrane to the oval window
Steroid hormones - ANSWER all of the above
Many medications introduced into the blood stream cannot directly affect the neurons of the
CNS because - ANSWER The lining of the capillaries in the CNS forms a blood-brain barrier
The following are the steps involved in a reflex arc. Determine the correct order:
1. Activation of a sensory neuron
2. Activation of a motor neuron
3. Response by an effector
4. Arrival of a stimulus and activation of a receptor
5. Information processing - ANSWER 4, 1, 5, 2, 3
The interstitial cells of the testes produce - ANSWER Testosterone
The hormone that is the antagonist of calcitonin is - ANSWER Parathyroid hormone (PTH)
The term general senses refers to sensations of - ANSWER All of the above
The primary motor area is located in the region of the - ANSWER Precentral gyrus
A blind spot in the retina occurs where - ANSWER The optic nerve attaches to the retina
, The corpus callosum is composed of - ANSWER Commissural fibers
The hypothalamus controls the secretions of the anterior pituitary by way of - ANSWER
Releasing and inhibiting hormones
A cell's ability to respond to a hormone is determined by - ANSWER The presence or absence of
appropriate receptors
Each of the following is an ascending tract in the spinal cord except one. Identify the exception.
A. Fasciculus gracilis
B. Fasciculus cuneatus
C. Posterior spinocerebellar
D. Corticospinal tract
E. Anterior spinothalamic - ANSWER D, corticospinal tract
Follicle cells in the ovary produce large quantities of *blank* when stimulated
by gonadotropins. - ANSWER Estrogen
The movement of the head in the direction of a loud noise is coordinated in the
mesencephalon. Which nuclei are likely involved in this process? - ANSWER Inferior colliculi
Cholinergic neuroeffector junctions release the neurotransmitter - ANSWER Acetylcholine
Each of the following hormones is produced by the anterior pituitary except one. Identify
the exception.
A. FSH
B. ADH
C. TSH
D. ACTH
