What is the action of flexor carpi ulnaris?
A) flex the index finger B) flex the hand
C) flex the thumb D) flex the little finger
Answer: B
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The head of a sperm is mostly
A) cytoskeleton. B) mitochondria. C) cell membrane. D) nucleus.
What changes would one expect with strenuous exercise?
A. an increase in tidal volume but little change in respiratory frequency. B. a decrease in minute ventilation. C. a decrease in the volume in the lung at the end of expiration. D. an increase in the end-systolic volume.
The cervical region of the spinal cord lacks associated autonomic nuclei. How will a cross section of the spinal cord in this region differ from a cross section of the thoracic region?
A. There should be no difference in the appearance from one region compared to other regions. B. Posterior gray horns are lacking in the cervical region. C. Lateral gray horns are not present in the cervical region. D. Ventral gray horns are smaller in the cervical region due to fewer motor nuclei.
Neurons either conduct action potentials along the length of their axons, or they remain at rest. This statement best describes ________
A) a reflex arc B) the all-or-none response C) repolarization D) saltatory conduction E) graded potential