What is the difference between elastic arteries and muscular arteries?
A) Elastic arteries have more smooth muscle than muscular arteries.
B) Muscular arteries have larger lumens than elastic arteries.
C) Elastic arteries have elastic fibers throughout the tunica media whereas muscular arteries have few elastic fibers in the tunica media.
D) Elastic arteries are closest to the arterioles and muscular arteries are farther away.
E) Elastic arteries have a larger tunica intima and tunica media compared to muscular arteries.
C
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Which of the following types of neurons have one axon and one dendrite emerging from the cell body and are found in the retina of the eye, inner ear, and olfactory region of the brain?
a) bipolar neuron b) multipolar neuron c) unipolar neuron d) nonpolar neuron e) pseudounipolar
The structure that produces a thin, milk-colored fluid that composes about 30% of the seminal fluid volume is the:
a. seminal vesicles b. prostate gland c. bulbourethral glands d. seminiferous tubules
The four most abundant elements in the human body are
A. calcium, hydrogen, sodium, and potassium. B. carbon, oxygen, magnesium, and zinc. C. carbon, hydrogen, oxygen, and iron. D. carbon, hydrogen, oxygen, and nitrogen. E. carbon, sulfur, calcium, and potassium.
Lymphatic vessels:
A. collect excess fluid from interstitial spaces. B. drain blood from lymph nodes. C. are part of the venous system. D. are built like arteries.