Cardiac muscle cells are nourished via blood supply provided from the __________.
a. pulmonary circuit
b. coronary circuit
c. systemic circuit
d. coronary, pulmonary, and systemic circuits
Answer: b. coronary circuit
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A) An encounter with an antigen B) An encounter with mast cells C) Cells that have undergone partial differentiation D) Stem cells
When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods?
A) relaxation period B) refractory period C) latent period D) fatigue period
The blood testis barrier is to newly formed sperm cells as the blood thymus barrier is to ________
A) plasma cells B) white pulp C) T lymphocyte precursors D) mast cells
Guinea pigs do not synthesize vitamin ____, so they need to eat fresh foods or supplements to ensure they do not develop vitamin deficiencies
Fill in the blank(s) with correct word