Which type of cells form the proximal convoluted tubule?
A. Stratified squamous epithelium
B. Simple columnar cells with microvilli and cilia
C. Pseudostratified ciliated columnar epithelium
D. Simple cuboidal epithelium with microvilli
Answer: D
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Myasthenia gravis is an autoimmune disorder in which the immune system attacks and destroys acetylcholine receptors.
Answer the following statement true (T) or false (F)
Skeletal muscles are stimulated to contract by release of the neurotransmitter ____________________
Fill in the blank(s) with correct word
The cardiac notch
A. is on the medial aspect of the right lung. B. is on the medial aspect of the left lung. C. is a notch on the heart where the coronary arteries originate. D. is where the pulmonary trunk rests on the heart.
What may result if the pharyngoesophageal sphincter does not function properly?
A. Food will be swallowed much faster. B. Food will bypass the esophagus. C. Food cannot enter the esophagus. D. Food will cause the esophagus to collapse.