Biopsych - Exam 3 questions

33. _______________maintain a high basal body temperature, which has the advantage of __________, balanced with the disadvantage of ___________.

A. Endotherms, allowing for fast movements and less fatigue, a high energy cost

35. The myelin sheath is composed of ______________ in the central nervous system and is necessary for ________________________ down the axon.

A. Oligodendrocytes, saltatory conduction

26. Which of the following is an effect of oxytocin?

A. Orgasmic pleasure B. Stimulation of uterine contractions C. Milk release

21. During a research study, Tom performs a cold pressor test in which he places his hand in ice water for a few minutes. Which of the following accurately describes how his body responds.

A. Temperature receptors in Tom's hand signal to the preoptic area of the hypothalamus to direct physiological changes which conserve heat, such as constricting blood vessels.

3. Dinah's body has produced aldosterone so that she _____.

A. is able to conserve sodium

7. In response to emotionally arousing events, the locus coeruleus releases ____.

A. norepinephrine

16. During sleep, neurons in the thalamus become _________. One potential mechanism by which this may occur is ____________.

B. Hyperpolarized, increasing the amount of potassium allowed to flow out of the cell

34. Which statement is true of EPSPs?

B. They decay over time and space.

39. Ghrelin is secreted by the ___________ and stimulates ____________.

B. stomach, appetite

28. Which of the following is correctly paired? A. Pancreas; Lactase B. Liver; Aldosterone C. Duodenum; CCK D. Kidneys; Ghrelin

C

38. The ___________ is just anterior to the ___________. These two structures are separated by the ___________. A. primary visual cortex, primary somatosensory cortex, lateral sulcus B. thalamus, basal ganglia, lateral ventricles C. primary motor cortex, primary somatosensory cortex, central sulcus D. primary auditory cortex, insula, central sulcus

C

18. Steroid hormones have the ability to bind to receptors and trigger long-lasting changes, such as changes in gene expression. These effects mirror the effects of _________ receptors in a post-synaptic neuron.

C. Metabotropic

29. Androgen is to __________ as estrogen is to __________.

C. Testosterone; estradiol

1. Glucagon stimulates the liver to ____.

C. convert glycogen to glucose

2. Output from the paraventricular nucleus acts on the ____. Inhibiting the paraventricular nucleus has the effect of __________ feeding.

C. lateral hypothalamus, stimulating

40. Which of the following is not a characteristic of hormones? A. They are carried in the blood B. They are released by endocrine glands C. They are released at a synapse D. They are chemical signals

C`

32. Sally has had damage to the dorsal stream of her visual system, also known as the ____ pathway. She now has trouble with _____.

D. "how," reaching out to grasp an object

31. The basal forebrain is part of the _______ lobe and is __________ with respect to the ___________.

D. frontal, ventral, corpus callosum

5. An organizing effect differs from an activating effect of a hormone in that an organizing effect ____.

D. produces more long-lasting effects

19. You discover a new alien species and are studying their brains. After studying many samples, you find a region of the brain that is significantly larger in females than in males. You conclude that this region is:

Sexually dimoprhic

9. Cells in the basal forebrain increase arousal and wakefulness by releasing ____.

acetylcholine

17. Which of the following would you anticipate having an effect of boosting fertility in a female?

administering FSH

6. During her menstrual cycle, Lacresha's _____ releases FSH.

anterior pituitary

11. Stimulation of the reticular formation ____.

awakens a sleeping indivual

37. The region of the retina in which the optic nerve exits is the __________.

blind spot

12. Dwayne sometimes experiences brief periods of moderate stress. As a result, the stress ______.

boosts the activity of his immune system

27. Although both males and females produce LH, only females have receptors on their reproductive structures that respond to it.

false

20. The INAH-3 is a region of the _____________, the size of which is correlated with ____________.

hypothalamus, homosexuality

30. Narcolepsy is associated with a lack of ___________, which is produced by the __________.

orexin, hypothalamus

10. Which of these is characteristic of sleep apnea?

periods without breathing during sleep

14. Which of the following cells in the visual pathway are light-sensitive under normal conditions?

rods, cones and ganglion cells

13. Cutting the branch of the vagus nerve from the stomach to the brain would most likely impair:

satiety due to stomach distension

8. Orexin, produced by neurons in the hypothalamus, appears to be necessary for ____.

staying awake

the cerebellum is involved in

the timing of movements

15. Both hormones and neurotransmitters may consist of peptides.

true

4. Hal is experiencing osmotic thirst. He should drink pure water.

true