________ open or close in response to binding specific molecules
A) Leak channels
B) Activated channels
C) Chemically gated channels
D) Voltage-gated channels
E) Voltage-gated and chemically gated channels
C
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The carina is located at T3/T4.
Answer the following statement true (T) or false (F)
Which figure exhibits concentric contraction of the biceps brachii muscle?
a) A b) B c) C d) none of these choices
During sexual arousal, an erection is caused by a dilation of arteries filling the erectile tissue of the penis. Innervation of the penile arteries is provided by which of the following nerves?
A. Genitofemoral nerves B. Ilioinguinal nerves C. Pelvic splanchnic nerves D. Pudendal nerves E. Sacral splanchnic nerves
Which of the following is NOT a characteristic of connective tissue?
A. All types are avascular. B. Can be a solid, semifluid, or a fluid. C. It has a non-living extracellular matrix. D. It contains fibers as well as cells.