The scientific discipline that studies the functions of body structures is
A. astronomy.
B. anthropology.
C. archaeology.
D. anatomy.
E. physiology.
Answer: E
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Match the structure to its description.
1. maintain muscle tone at rest through tonic activity 2. have afferent neurons that bring information to the CNS 3. excite both alpha and gamma motor neurons 4. found at the junction of tendons and muscle fibers 5. have gamma motor neurons that innervate internal fibers 6. eventually synapses with alpha motor neurons that innervate extrafusal muscle fibers A. muscle spindles B. Golgi tendon organs C. both
The corticospinal tracts control
A) sweat glands. B) voluntary muscle movements. C) spinal reflexes. D) posture.
Which of the following is the first step of hemostasis?
A) secretion of histamine B) vascular spasm C) formation of a blood clot D) formation of a platelet plug E) formation of a fibrin clot
Select the correct activity occurring during anaphase.
A)Chromatid pairs are move towards opposite poles of the cell. B)Pairs of sister chromatids split from one another. C)Pairs of sister chromatids are clustered near the midline of the cell. D)Chromosomes move towards opposite poles of the cell.