Arteries ensure that blood constantly flows due to contraction of its smooth muscle layer
Indicate whether the statement is true or false
F
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When you try to focus on the tip of your nose,
A. the tension on the suspensory ligament increases. B. the lens becomes more spherical. C. the pupils dilate. D. the lens becomes flatter. E. the ciliary muscles relax.
Along an axon, the gaps between neurolemmocytes are called neurofibril ________
Fill in the blank with correct word.
What is the primary function of the vasomotor center of the medulla oblongata?
A) increases cardiac output through sympathetic innervation B) reduces cardiac output through parasympathetic innervation C) monitors the chemical composition of blood D) monitors the degree of stretch in the walls of expandable organs E) controls the diameters of arterioles through sympathetic innervation
__________ cells in the respiratory mucosa secrete mucus.
Fill in the blank(s) with the appropriate word(s).