Factors playing a role in fatigue can be classified into 2 categories. Define those two categories and provide an example of each.
What will be an ideal response?
Central fatigue, peripheral fatigue. Central fatigue arises in the central nervous system. Peripheral fatigue arises anywhere between the neuromuscular junction and the contractile elements of the muscle. Examples of central fatigue: subjective feeling of tiredness and a desire to cease activity. Example of peripheral fatigue is depletion of muscle glycogen stores, increases in inorganic phosphate concentration, or ion imbalance. See Figure 12.10 in the chapter.
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Glands whose secretions contain mucins are classified as
A) serous glands. B) compound glands. C) mucous glands. D) mixed glands. E) endocrine glands.
Inside the cranium, the vertebral arteries fuse to form the ________, which continues along the ventral surface of the brain.
A) occipital artery B) posterior cerebral artery C) cerebral arterial circle D) basilar artery E) middle cerebral artery
The hepatic sinusoids
A. transport bile. B. have phagocytic cells in their lining. C. are part of the portal triad. D. connect to the gallbladder. E. do not have a function.
How is venous return to your heart affected when you go for an easy jog?
A) It is decreased due to increased skeletal muscular pump activity B) It is increased due to increased skeletal muscular pump activity C) It is increased due to decreased skeletal muscular pump activity D) It is decreased due to decreased skeletal muscular pump activity