Biology Exam 2

Sensory and motor neurons of the ________ nervous system are associated with activities traditionally thought of as conscious or voluntary. Group of answer choices

somatic

The somatosensory cortex is responsible for processing ________. Group of answer choices

temperature, touch, and pain

The ________ of a neuron contain ________ that house neurotransmitters, the chemical messengers of the nervous system.

terminal buttons; synaptic vesicles

Which of the following conclusions can be drawn from the case study of Phineas Gage's accident, which led to brain injury?

Injury to the brain causes changes in behavior, and specific brain areas are linked to particular behaviors.

A(n) ________ is the electrical signal that typically moves from the neuron's cell body down the axon to the axon terminals. Group of answer choices

action potential

Human eggs and sperm each contain 23 ________, which are composed of long strands of ________. Group of answer choices

chromosomes; DNA

Which of the following is not a part sympathetic activation during the fight or flight response?

digestion functions become more active

________ is a neurotransmitter with roles in pleasure and pain modulation.

endorphins

The effects of neurotransmitters tend to be ________, whereas the effects of hormones tend to be ________.

faster, long lasting

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?

hypothalamus

In a resting state, sodium (Na+) is at a higher concentration outside the cell and potassium (K+) is more concentrated inside the cell. During an action potential, the sodium levels ________ inside the cell.

increase

Which of the following areas is located in the frontal lobe of the brain?

Broca's area

Wendy's mother has blue eyes and her father has brown eyes. The allele for brown eye color is dominant (B) to the allele for blue eye color (b), but Wendy has blue eyes. Therefore, Wendy's ________ must be ________ and her father's must be Bb.

genotype; bb

The myelin sheath is made from ________.

glial cells

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?

no sensation in his legs and feet