Which structure contains nuclei that control coughing, sneezing, swallowing, and vomiting?
A. Midbrain
B. Thalamus
C. Hypothalamus
D. Medulla oblongata
E. Pons
Answer: D
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The ventricles are contracting during the QRS interval of an EKG.
Answer the following statement true (T) or false (F)
The body uses feedback loops to maintain homeostasis. The response that opposes an action is known as a(n) ________.
A. depressing feedback loop B. negative feedback loop C. positive feedback loop D. affirmative feedback loop
Pulmonary surfactant reduces the work of breathing and increases lung stability by increasing alveolar surface tension
Indicate whether the statement is true or false
Thymosins ________
A) facilitate the production of mature T cells B) phagocytize abnormal red blood cells C) engulf pathogens D) defend the body against viral pathogens