Which are differences between cardiac muscle tissue and skeletal muscle tissue?
a: The sarcoplasmic reticulum in cardiac muscle is less extensive.
b: The sarcoplasmic reticulum in cardiac muscle is more organized.
c: Cardiac muscle has intercalated discs; skeletal muscle does not.
d: Cardiac muscle has 1 or 2 nuclei per cell; skeletal muscle has multiple nuclei per cell.
e: Cardiac muscle has more well-defined terminal cisternae.
A. a, c, d
B. a, c, e
C. b, c, e
D. a, b, e
E. b, d, e
A
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During ventricular systole
A. only the AV valves open. B. the semilunar valves close and the AV valves open. C. only the AV valves close. D. only the semilunar valves close. E. the semilunar valves open and the AV valves close.
Describe an anaphylactic reaction
What will be an ideal response?
Insulin and growth hormone are examples of ____ hormones
a. steroid b. modified amino acid c. protein d. exocrine
Local hormones that act on neighboring cells are called:
A) Exocrines B) Paracrines C) Circulating hormones D) Autocrines