In humans
A. back muscles are strong to maintain erect posture.
B. deep back muscles extend from the vertebrae to the ribs.
C. most of the muscle mass in the lower back is from the spinalis muscle.
D. back muscles are not very strong.
E. back muscles are similar in strength to the back muscles of cattle.
A
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Which of the following is correct regarding acclimatization?
A) At high altitudes, hemoglobin's affinity for O2 is increased because BPG concentrations increase. B) High-altitude conditions always result in lower-than-normal hemoglobin saturation levels because less O2 is available to be loaded. C) Decreases in arterial PO2 cause the peripheral chemoreceptors to become less responsive to increases in PCO2. D) When blood O2 levels decline, the kidneys produce more erythropoietin, which stimulates breakdown of red blood cells in the spleen.
Cells lose water when placed in a __________ solution
A) hypotonic B) dilute C) isotonic D) hypertonic
Which of the following structures defines the point at which the posterior lamina of the internal oblique and the aponeurosis of the transverse abdominal become part of the anterior rectus sheath?
(A) arcuate line (B) inguinal ligament (C) tendinous intersections (D) deep inguinal ring (E) medial crus
The palatoglossus is innervated by which nerve(s)?
A) Hypoglossal B) Vagus C) Accessory D) Hypoglossal and accessory E) Accessory and vagal