An important component of the lamina propria in the upper respiratory system is
A) sweat glands.
B) ceruminous glands.
C) mucus glands.
D) serous glands.
E) smooth muscle cells.
C
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This nucleus participates in the expression of emotions, control of behavior, and development of moods.
A. Amygdaloid body B. Caudate nucleus C. Putamen D. Globus pallidus E. Claustrum
How many bones form the orbit?
A. 6 B. 7 C. 8 D. 9 E. 14
Answer the following statements true (T) or false (F)
1. The control of the volume of body fluid is an example of a negative feedback loop. 2. The regulation of blood pH is an example of a positive feedback loop. 3. The contraction of the uterus during childbirth is an example of a positive feedback loop. 4. The arms and legs are part of the axial body portion. 5. The head and trunk are part of the axial body portion.
If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells, ________
A) contractions would last as long as the refractory period B) tetanic contractions might occur, which would stop the heart's pumping action C) pacemaker cells would cease to spontaneously depolarize D) it would be much longer before cardiac cells could respond to a second stimulation