During ventricular systole, the AV valves ________ and the semilunar valves ________.
A. close; close
B. open; close
C. close; open
D. open; open
Answer: C
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Aged and damaged erythrocytes are broken down by macrophages in the
A) spleen. B) liver. C) bone marrow. D) digestive tract. E) spleen, liver, and bone marrow.
Which of the following organ systems would most likely be affected by breaking a rib?
A) digestive B) respiratory C) excretory D) endocrine E) All of the answers are correct.
What is the order that filtrate must pass through to the glomerular capsule?
A. Capillary fenestrae, podocytes of visceral glomerular epithelium, glomerular basement membrane B. Glomerular basement membrane, capillary fenestrae, podocytes of visceral glomerular epithelium C. Podocytes of glomerular epithelium, glomerular basement membrane, capillary fenestrae D. Capillary fenestrae, glomerular basement membrane, podocytes of visceral glomerular epithelium
Describe the role of the medulla oblongata
A) The medulla oblongata functions in conscious thought, memory storage and processing, and regulating skeletal muscle contractions. B) The medulla oblongata contains centers involved with emotions, autonomic function, and hormone production. C) The medulla oblongata relays sensory information to other parts of the brainstem and to the thalamus. It also contains centers that regulate autonomic functions, such as heart rate and blood pressure. D) The medulla oblongata coordinates and modulates motor commands coming from the cerebral cortex. E) The medulla oblongata processes visual and auditory information and controls reflexes triggered by those stimuli.