Which of the following is a difference between cardiac muscle and skeletal muscle?
a. Unlike skeletal muscle cells, cardiac muscle cells do not rely on an influx of calcium ions for depolarization.
b. Unlike skeletal muscle, cardiac muscle does not use a sliding filament mechanism for contraction.
c. Unlike skeletal muscle, cardiac muscle is not striated.
d. Unlike skeletal muscle cells, cardiac muscle cells can be autorhythmic.
Answer: d. Unlike skeletal muscle cells, cardiac muscle cells can be autorhythmic.
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Which of the following is not a function of triglycerides?
A) They are a reserve and important source of energy. B) They help insulate against heat loss in cold climates. C) They help protect organs by creating a cushion around the organ. D) They act as a reserve for lipid soluble vitamins. E) They act as a structural component of plasma membranes.
Absence of sensation is referred to as:
A) dysesthesia B) neurothesia C) proprioceptesia D) anesthesia
Which syndrome is associated with excess mineralcorticoid secretion?
a. Cushing's b. Lordon's c. Conn's d. Addison's e. both (c) and (d)
Releasing hormones directly affect:
A) the hypothalamus B) the anterior pituitary C) the posterior pituitary D) the ovaries and testes E) it depends on which releasing hormone you are talking about