The ventral rami of spinal nerves C4 to T1 contribute fibers to the ________ plexus
A) cervical
B) brachial
C) lumbar
D) sacral
E) thoracic
Answer: B
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Select the correct statement about the heart valves
A) The tricuspid valve separates the left atrium from the left ventricle. B) The mitral valve separates the right atrium from the right ventricle. C) The AV valves are supported by the chordae tendineae so that blood does not flow back into the atria during ventricular contraction. D) Aortic and pulmonary valves control the blood flow into the heart.
Which bone is not paired?
A. Maxilla B. Nasal C. Mandible D. Lacrimal E. Zygomatic
A ________ is an elevated patch of melanized skin
A) hemangioma B) friction ridge C) flexion line D) mole E) freckle
The glomerular capsule and the glomerulus make up the
A) renal pyramid. B) renal papilla. C) renal corpuscle. D) nephron loop. E) juxtaglomerular complex.