Which of the following is an example of the skeletal system's primary function of providing structural support?
A) Calcium salts are found in bone.
B) Bones change the magnitude and direction of the forces generated by skeletal muscles.
C) Red marrow fills the internal cavities of many bones.
D) The skull encloses the brain.
E) Individual bones provide a framework for the attachment of soft tissues and organs.
E) Individual bones provide a framework for the attachment of soft tissues and organs.
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Olfactory receptors are found
a) throughout the nasal cavity. b) only in the superior portion of the nasal cavity. c) only in the inferior portion of the nasal cavity. d) from the vestibule to the pharynx. e) only in the mid-nasal ridges.
Which structure in the figure is labeled A?
a) left common carotid artery b) left subclavian artery c) left pulmonary vein d) mitral valve
In convergence, two or more incoming fibers contact a single neuron, whereas in
divergence, impulses leaving a neuron pass into several output fibers. Indicate whether the statement is true or false
The blood vessels that are under the greatest pressure are the ________.
A. arterioles B. elastic arteries C. capillaries D. venules E. veins