The walls of bronchioles are dominated by ________, whose activity is regulated by the autonomic nervous system.
A) C-shaped rings of hyaline cartilage
B) elastic cartilage
C) skeletal muscle
D) a mix of cartilage plates and smooth muscle
E) smooth muscle
E) smooth muscle
Anatomy & Physiology
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Which labeled structure shown in the diagram is a pouch-like extension that serves to slightly increase the capacity of an atrium?
a) F b) E c) G d) I e) D
Anatomy & Physiology
Embryonic damage to the mesencephalon could result in improper formation of the midbrain
Indicate whether the statement is true or false
Anatomy & Physiology
Describe the importance of hemoglobin
What will be an ideal response?
Anatomy & Physiology
Most congenital birth defects are caused by
A. inherited traits. B. lack of oxygen to the fetus. C. viral infections during pregnancy. D. unknown causes. E. None of these choices is correct.
Anatomy & Physiology