During embryonic development in vertebrates, the foregut gives rise to the
A) Esophagus.
B) Stomach.
C) Anterior region of the duodenum.
D) All of the above
Answer: D
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A blood clot attached to the inner surface of a blood vessel is called a
A) embolus. B) plaque. C) thrombus. D) platelet plug. E) fibrin mesh.
Which of the following is (are) not part of the peripheral nervous system?
a. alpha motor neurons b. sympathetic nervous system c. spinal cord d. afferent division e. vagus nerve
Cardiac muscle tissue __________.
a. will not contract unless stimulated by autonomic nerves b. is innervated mostly be neurons associated with the sympathetic division of the autonomic nervous system c. has its own intrinsic conduction system that can set the pace of the beating heart d. will not contract unless stimulated by somatic motor neurons
What cell type gives rise to erythrocytes, platelets, granular leukocytes, and agranular leukocytes?
A) megakaryocytes B) B lymphocytes C) stem cells D) macrophages