The observed differences in skin color reflect the levels of ________ production.
A) melanin
B) keratinocyte
C) carotene
D) keratin
E) melanocyte
A) melanin
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Which of these structures has no cartilage in it?
A. epiglottis B. trachea C. bronchi D. bronchiole E. larynx
The two major divisions of the ventral body cavity are the
A) pelvic and thoracic. B) cranial and sacral. C) lateral and medial. D) thoracic and abdominopelvic. E) dorsal and ventral.
Which molecules in the skin attach directly to the basal lamina beneath the keratinocytes?
a. Anchoring fibrils of type VII collagen b. Banded fibers of type II collagen c. Clathrin d. Keratin fibers e. Microtubules
Which is not correct about the vascular tunic of the eye?
A. The choroid is the most extensive and posterior region of the vascular tunic. B. Melanin pigment granules in the choroid absorb extraneous light. C. The iris is composed of two groups of skeletal muscle fibers. D. The ciliary body epithelium secretes aqueous humor. E. Relaxation and contraction of ciliary muscles alter the shape of the lens.