Psych Test 2

A(n) ________ is the electrical signal that typically moves from the neuron's cell body down the axon to the axon terminals. a. hyperpolarization b. depolarization c. threshold of excitation d. action potential

d. action potential

Which is the main type of chemical messengers secreted by the male gonads? a. estrogens b. dopamine c. endorphins d. androgens

d. androgens

Changes in behavior and cognitive processes over time are studied by ________. a. behavioral psychologists b. evolutionary psychologists c. behavioral geneticists d. historical psychologists

not a

The ________ of a neuron contain ________ that house neurotransmitters, the chemical messengers of the nervous system. a. axons; terminal buttons b. terminal buttons; synaptic vesicles c. dendrites; synaptic vesicles d. terminal buttons; transport proteins

not a

Hyperpolarization means that the ________. a. membrane potential becomes more negative than the resting potential b. membrane potential becomes more positive than the resting potential c. sodium gates open d. potassium gates open

a. membrane potential becomes more negative than the resting potential

Human eggs and sperm each contain 23 ________, which are composed of long strands of ________. a. genes; DNA b. chromosomes; DNA c. chromosomes; genes d. DNA; genes

b. chromosomes; DNA

________ is a state of equilibrium, in which biological conditions (such as body temperature) are maintained at optimal levels. a. resting potential b. homeostasis c. reuptake d. synergy

b. homeostasis

Jeremy has Parkinson's disease, a progressive neurodegenerative disease that affects motor skills. In addition to motor symptoms, Jeremy has noticed changes in his mood. It is likely that Jeremy's ________ is producing less ________ than it needs to. a. motor cortex; dopamine b. substantia nigra; dopamine c. substantia nigra; acetylcholine d. motor cortex; acetylcholine

b. substantia nigra; dopamine

The space between two neurons is called the ________. a. terminal button b. synapse c. soma d. vesicle

b. synapse

Terri Schiavo went into cardiac arrest and her brain was deprived of oxygen, leaving only her brainstem functioning. Which of the following functions could Schiavo still accomplish? a. hear someone talking to her b. feel someone touching her hand c. groan and move her eyes d. speak in simple words

c. groan and move her eyes

Elaina has been diagnosed with a small brain tumor. She first went to see her doctor after experiencing symptoms such as feeling very cold, almost fainting, a reduced appetite, and reduced sexual desire. Which of the following structures is her tumor most likely affecting? a. thalamus b. Broca's area c. hypothalamus d. substantia nigra

c. hypothalamus

The ________ is the difference in charge between the intracellular and extracellular space of a neuron. a. resting potential b. intracellular fluid c. membrane potential d. extracellular fluid

c. membrane potential

________ asserts that our genes set the boundaries within which we can operate, and our environment interacts with our genes to determine where within those boundaries we will fall. a. evolutionary psychology b. environmental psychology c. range of reaction d. behavioral genetics

c. range of reaction

Which two neurotransmitters have roles in appetite suppression? a. serotonin; glutamate b. serotonin; GABA c. dopamine; norepinephrine d. dopamine; acetylcholine

not a

Dmitris is in a car accident and his parietal lobe is injured. Which of the following is the most likely behavioral effect of his accident? a. no sensation in his legs and feet b. a loss of both his sense of taste and his sense of smell c. blindness d. Wernicke's aphasia

not b

People who have their corpus callosum severed for medical reasons would be able to tell you about which images shown to ________. a. neither visual field b. both visual fields c. only the left visual field d. only the right visual field

not b

Which one of the following processes does not occur to excess neurotransmitters in the synapse? a. drifting away from the synapse b. break down into inactive fragments c. collection by scavenger vesicles left over from the neurotransmitter release d. reuptake

not b

Kelsey had a CT scan that showed a tumor in the right frontal cortex. Which of the following behavioral symptoms most likely prompted the scan to take place? a. motor skill deficits in the left side of her body b. difficulty comprehending language c.difficulty producing language d. sensory deficits in the right side of her body

not d

Randolf is walking down the street of his hometown, after being away for several years, when he smells the scent of freshly baked pie coming from a local baker. He suddenly has vivid memories of walking down this street as a child, holding both of his parents' hands, and swinging between them, feeling relaxed and happy. This is because the sense of smell projects directly to the ________, which is responsible for emotional memories. a. limbic system b. reward pathway c. frontal ganglia d. medulla

a. limbic system

Sensory and motor neurons of the ________ nervous system are associated with activities traditionally thought of as conscious or voluntary. a. somatic b. parasympathetic c. autonomic d. sympathetic

a. somatic