In cartilage, ________ growth occurs when cells of the perichondrium divide repeatedly, the innermost ones differentiating into chondroblasts that produce new matrix.
Fill in the blank(s) with the appropriate word(s).
appositional
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Some ________ neurons are specialized to detect stimuli, whereas ________ neurons send signals to the effectors of the nervous system.
A. efferent; inter- B. afferent; inter- C. afferent; efferent D. efferent; afferent E. motor; sensory
Specialized lymphatic capillaries called lacteals are
A) located primarily in the large intestine. B) necessary for the transport of dietary lipids. C) part of the fenestrated capillary group. D) more numerous than blood capillaries. E) located throughout the body.
Light rays passing through a concave lens undergo convergence
Indicate whether the statement is true or false
Why do people who have a heart attack often experience pain radiating along the left shoulder and arm?
A. Signals from nociceptors in the heart diverge and stimulate pain sensations in a large region. B. Signals from the cardiac and shoulder region converge and follow the same pathway to the cortex. C. Nociceptors from the cardiac and shoulder regions all send afferent signals through the phrenic nerve. D. Nociceptors from the cardiac and shoulder regions all send afferent signals through the vagus nerve. E. Lack of blood to the left shoulder and arm result in ischemia and stimulates nociceptors in those regions.