The epidermis is composed of which type of epithelium?
A) transitional
B) simple columnar
C) stratified cuboidal
D) simple squamous
E) stratified squamous
E) stratified squamous
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What is the function of dendritic cells within lymph nodes?
A. They initiate replication of macrophages. B. They conduct signals between activated T-lymphocytes to accelerate the immune response. C. They collect antigens and present them to T-lymphocytes. D. They absorb fluid when infected, causing the lymph nodes to swell and become tender to the touch. E. They secrete lymphatic hormones to stimulate adjacent lymph nodes.
A ________, also called a mole, is a harmless, localized overgrowth of melanin-forming cells.
Fill in the blank(s) with the appropriate word(s).
A 43-year-old woman is admitted to a hospital because of deep abdominal pain in her epigastric region. On examination, it is observed that a retroperitoneal infection erodes an artery that runs along the superior border of the pancreas. Which of the following arteries is likely injured?
(A) Right gastric artery (B) Left gastroepiploic artery (C) Splenic artery (D) Gastroduodenal artery (E) Dorsal pancreatic artery
This figure compares the organization of the somatic motor system and the autonomic nervous system. Identify structure "B" on the above diagram.
A. Somatic motor neuron B. Effector organ (smooth muscle of GI tract) C. Postganglionic neuron D. Preganglionic neuron E. Autonomic ganglion