Which of the following describes the retina?
is the colored part of the eye
Located in the posterior cavity
is the outermost layer of the eye
Produces aqueous humor
The Correct Answer is B
a: Is the colored part of the eye - This describes the iris, which is the colored part of the eye that regulates the size of the pupil.
b. Located in the posterior cavity: The retina is a layer of tissue located in the posterior cavity of the eye. It contains photoreceptor cells that convert light into neural signals, which are then transmitted to the brain via the optic nerve.
c: Is the outermost layer of the eye - The outermost layer of the eye is the sclera, a tough, white layer that helps maintain the shape of the eye.
d: Produces aqueous humor - Aqueous humor is produced by the ciliary body and is found in the anterior chamber of the eye, not in the retina.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Loop of Henle:After the glomerular filtrate passes through the proximal convoluted tubule, it enters the Loop of Henle. This component of the nephron is responsible for further concentrating the filtrate and plays a critical role in urine concentration.
B. Bowman's capsule:Bowman's capsule is where glomerular filtration begins. It collects the filtrate from the glomerulus, but it is not where filtrate goes after the proximal convoluted tubule.
C. Collecting duct:The collecting duct is the final segment of the nephron where urine is collected after it has passed through the Loop of Henle and distal convoluted tubule. It does not receive the filtrate directly from the proximal convoluted tubule.
D. Glomerulus:The glomerulus is a network of capillaries where filtration of blood occurs, producing glomerular filtrate. It is not a component that the filtrate enters after the proximal convoluted tubule.
Correct Answer is B
Explanation
a. Destroy pathogens that enter a break in the skin: While mast cells can contribute to the defense against pathogens by releasing inflammatory mediators, their primary function is not the direct destruction of pathogens.
b. Produce histamine and leukotrienes that initiate inflammation: This is correct. Mast cells are known for their role in releasing histamine and leukotrienes, which are key mediators of the inflammatory response.
c. Cushion bony prominences: This is not a function of mast cells. Cushioning bony prominences is a role more related to adipose tissue.
d. Connect skin to muscles: This is the function of connective tissue, not mast cells.
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