Which of the following structures are important to the regulation of mood, states of arousal, and sleep?
A. the vestibular nucleus and the cochlear nucleus
B. the raphe nuclei and the locus coeruleus
C. the red nucleus and substantia nigra
D. periaqueductal gray and the red nucleus
Answer: B
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If I collected data on the number of children per family in a particular neighborhood, what type of graph should I use to organize the data?
a. A histogram b. A bar graph c. A frequency polygon d. A frequency distribution
Babies as young as 4 months display object permanence
a. True b. False Indicate whether the statement is true or false
Jonathan tripped on a sprinkler during a game of flag football, and felt a sharp pain as he broke his ankle. Later on, after he returned home from the emergency room with a new cast, he felt a dull, aching pain in his broken ankle. Which of the following is the best explanation for Jonathan's experience?
a. The sharp pain resulted from the transmission of messages along C fibers, and as the rate of signaling dropped, the quality of the pain changed to dull and aching. b. The sharp pain resulted from the activation of nociceptors that respond to mechanical injury, whereas the dull pain resulted from the activation of nociceptors that respond to chemicals released by damaged cells. c. The sharp pain resulted from the transmission of messages along C fibers, and the dull pain resulted from the transmission of messages along A? fibers. d. The sharp pain resulted from the transmission of messages along A? fibers, and the dull pain resulted from the transmission of messages along C fibers.
At times of stress, the hypothalamus communicates with the anterior pituitary gland using a. cortisol
b. corticotrophin-releasing hormone (CRH). c. adrenocorticotropic hormone (ACTH). d. dopamine.