What is the purpose of motor nerve varicosities as they relate to smooth muscle?
A. They link the thin filaments to the inside of the sarcolemma in smooth muscle.
B. They reabsorb the decomposition products of acetylcholine after acetylcholinesterase breaks it down.
C. They enable each cardiac myocyte to directly stimulate its neighbors.
D. They release neurotransmitter onto smooth muscle cells.
E. They prevent single-unit smooth muscle cells from pulling apart.
D. They release neurotransmitter onto smooth muscle cells.
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Which of the following does NOT correctly describe kidney function?
A. They secrete hormones. B. They excrete metabolic waste products. C. They contribute significantly to long-term regulation of arterial blood pressure by maintaining the proper plasma volume. D. They assist in maintaining proper acid-base balance in the body. E. They produce urine of a constant composition at all times, in order to maintain homeostasis of extracellular fluid.
Describe the three phases of the general adaptation syndrome (GAS) that constitute the body's response to stress. Which endocrine secretions play dominant roles in the alarm and resistance phases?
What is the special role of the thymus gland?
What will be an ideal response
Most blood from the brain flows down the internal jugular veins and then into which vessel(s)?
A. External jugular veins B. Vertebral veins C. Superior vena cava D. Subclavian veins E. Brachiocephalic veins