Julisa won a lottery ticket and began to hyperventilate in her excitement. Explain how hyperventilation affects the partial pressure of carbon dioxide in her blood and her blood pH
What will be an ideal response?
Hyperventilation is the increase in the rate and/or depth of Julisa's breathing. She expires more carbon dioxide, thus lowering the partial pressure of carbon dioxide in her blood and raising her blood pH. This could lead to respiratory alkalosis.
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Communication that the homeostatic variable has deviated outside normal limits
a. afferent signal b. efferent signal c. A & B
The feet of the sensory homunculus are located
A. medially on the postcentral gyrus. B. medially on the precentral gyrus. C. laterally on the postcentral gyrus. D. laterally on the precentral gyrus.
Answer the following questions true (T) or false (F)
1. Upper motor neurons directly contact and stimulate skeletal muscle fibers to contract. 2. Polysynaptic reflexes involve multiple synapses while monosynaptic reflexes only involve a single synapse. 3. The simple stretch reflex employs mechanoreceptors known as Golgi tendon organs to detect the degree of stretch experienced by a muscle.
Triceps brachii and biceps brachii perform opposing actions and are classified as:
A) antagonists. B) agonists. C) synergists. D) prime movers.