Where is the greatest concentration of cones located?
A. In the optic disc
B. In the ora serrata
C. In the fovea centralis
D. In the posterior retina
E. In the optic nerve
C
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Which of the following features of the stratum corneum is incorrect?
A) It is composed of differentiated epithelial cells. B) Its purpose is to reduce water loss. C) The tissue is dead and unresponsive to physical changes. D) It is heavily keratinized.
Which statement describes cytoplasmic vesicles?
A) They are formed by all types of endocytosis. B) They have a membrane that is very different from the plasmalemma. C) They never contain extracellular fluids. D) They only contain solids. E) Contents are toxic to the cell.
What is the role of the fibula in articulations of the leg?
A) It allows rotation at the ankle joint. B) It participates in the hinge action at the knee joint. C) It participates in rotational action at the knee joint. D) It is completely useless and should be removed. E) It articulates both proximally and distally with the tibia.
Urine is formed in the
A) ureter and bladder. B) ureter and urethra. C) kidney. D) kidney and bladder. E) urethra.