John is a sprinter who specializes in quick and powerful bursts of speed followed by periods of rest. Jim is a marathon runner who specializes in long, steady runs. Compared to John's muscles, how are Jim's most likely to differ?
A. Jim's muscles will have more glycogen stored in his type IIb muscle fibers.
B. Jim's muscles will have more mitochondria in his type I and IIa muscle fibers.
C. Jim's muscles will have less myoglobin in his type I muscle fibers.
D. Jim's type IIb fibers will be larger in diameter.
E. Jim will have a greater proportion of type II muscle fibers and a lower proportion of type I fibers than John.
B
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In the fasted state, which of the following statements is FALSE?
A) Pyruvate and lactate are transported to liver to make glucose. B) Some amino acids will be deaminated. C) Adipose breaks down its store of triglycerides. D) Skeletal muscle will increase gluconeogenesis.
The most common lipids in the body are
A. triglycerides, and they are used for energy storage in adipose.?B. glycoproteins, and they are used as backbones for cell membranes.?C. eicosanoids, and they are used as hormonal messengers.?D. steroids, and they are used as signaling molecules in inflammatory responses.?E. phospholipids, and they are used as key ingredients of bile salts.
Inability to move one limb is called ________________________________________
Fill in the blank(s) with correct word
Myelinated axons conduct impulses much faster because
a. the myelin insulates the axon. b. channels only have to open at the nodes. c. voltage is not lost through along myelinated areas. d. of saltatory conduction. e. all of these answers.