The medial pathway of the indirect motor pathway consists of three groups of tracts. The one that helps to regulate muscular activity that helps maintain balance during sitting, standing, and walking is the
A. vestibulospinal tract.
B. tectospinal tract.
C. reticulospinal tract.
Answer: A
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External respiration involves the
A) movement of air into and out of the lungs. B) diffusion of gases between the interstitial fluid and the external environment. C) exchange of dissolved gases between the cells and interstitial fluids. D) binding of oxygen by hemoglobin. E) utilization of oxygen by tissues to support metabolism.
Describe the anatomical and fluid compartments of the body. How do the lumens of hollow organs fit into these classifications? Which fluid-containing cavities are considered to be internal and which are external? Of those that are external, why are they external (give examples)? You may wish to design a flow chart to help answer this.
What will be an ideal response?
The poliovirus selectively destroys what part of the somatic nervous system?
a. blood vessels that supply motor neurons b. dendrites of motor neurons c. cell bodies of motor neurons d. axons of motor neurons e. neurotransmitters
What type of gland accumulates its secretion in the cytoplasm of the cell, the cell then ruptures and becomes part of the secretion?
A. endocrine B. merocrine C. apocrine D. exocrine E. holocrine