Which of these actions is accomplished by the erector spinae muscles?
A) abduct the thigh
B) extend the vertebral column
C) flex the vertebral column
D) protract the scapula
E) rotate the thigh
Answer: B) extend the vertebral column
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Which of the following cells is the most variable cell in the immune system?
a) Natural killer cell b) Monocyte c) RBC d) Lymphocyte e) Macrophage
On average, it takes about ________________________________________ hours for feed to pass through a horse's intestinal tract
Fill in the blank(s) with correct word
Which of the following is a function of astrocytes?
A. They circulate the cerebrospinal fluid. B. They produce cerebrospinal fluid. C. They phagocytize tissue debris. D. They form myelin in the CNS. E. They help form the blood-brain barrier.
Which pressure is greater on the venous end of a capillary?
A. Blood pressure B. Osmotic pressure C. Blood pressure and osmotic pressure are the same.