Which hormones are classified as steroid hormones? select all that apply.
a) oxytocin
b) testosterone
c) epinephrine
d) thyroid hormone
e) cortisol
Ans:
b) testosterone
e) cortisol
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Indicate whether this statement is true or false.
Which of the following is the uppermost part of the digestive tract?
A) spleen B) stomach C) pharynx D) esophagus E) intestine
Nerves
a. contain afferent nerve fibers b. contain efferent nerve fibers c. are present within the peripheral nervous system d. do not contain complete neurons e. exhibit all of the above characteristics
Once excitation-contraction coupling has occurred, calcium ion concentration increases dramatically in the:
A) cytosol of the muscle fiber. B) sarcoplasmic reticulum. C) sarcolemma. D) terminal cisterna.