Which of the following choices best describes dopamine

10 Jun Which of the following choices best describes dopamine

Question
Question 1 (5 points)
Which of the following choices best describes dopamine?

Question 1 options:

A substance that is naturally found in the brain.

An illegal drug that can cause great damage.

A receptor molecule that is found on neurons.

A protein that stimulates neurons to grow.

SaveQuestion 2 (5 points)
Which receptors respond to a scraped knee?

Question 2 options:

chemoreceptors

thermoreceptors

photoreceptors

pain receptors

SaveQuestion 3 (5 points)
Which of the following is true about muscle tone?

Question 3 options:

It increases with age.

It is responsible for keeping the back and legs straight when you’re relaxed.

It decreases as you exercise more.

It describes the relaxing of some muscles.

SaveQuestion 4 (5 points)
Which diagram in the figure below shows an example of a joint involved in lifting your arms above your head?

Question 4 options:

Diagram D

Diagram C

Diagram A

Diagram B

SaveQuestion 5 (5 points)
Which structure in the figure below is commonly injured by people inserting cotton swabs or other objects into their ears?

Question 5 options:

structure A

structure D

structure B

structure C

SaveQuestion 6 (5 points)
The heart, liver, and stomach are each examples of

Question 6 options:

a tissue.

an organ system.

a nerve.

an organ.

SaveQuestion 7 (5 points)
What begins when a neuron is stimulated by another neuron or by a stimulus in the environment?

Question 7 options:

a resting potential

a dendrite

a threshold

an impulse

SaveQuestion 8 (5 points)
Read the following statements that describe how information flows in the nervous system. What is the correct order in which they occur?

1) Response is carried to glands or muscles.

2) Information is gathered.

3) Information is processed and a response is formed.

Question 8 options:

3,2,1

3,1,2

2,3,1

1,2,3

SaveQuestion 9 (5 points)
What is the function of the centralnervous system?

Question 9 options:

to process information and form a response

to gather information

to receive stimuli from the environment

to carry a response to glands and muscles

SaveQuestion 10 (5 points)
Refer to the figure below. Which structure carries impulses away from the cell body?

Question 10 options:

II

III

I

V

SaveQuestion 11 (5 points)
Which of the following sensory receptors would lead you to squint in bright light?

Question 11 options:

thermoreceptors

chemoreceptors

photoreceptors

mechanoreceptors

SaveQuestion 12 (5 points)
An imbalance in blood glucose levels causes which of the following diseases?

Question 12 options:

diabetes

AIDS

Parkinson disease

cancer

SaveQuestion 13 (5 points)
The most important function of the skin is

Question 13 options:

protection.

sweating.

insulation.

storing fat.

SaveQuestion 14 (5 points)
When an impulse reaches the end of a neuron, it triggers the release of

Question 14 options:

sodium ions.

receptors.

neurotransmitters.

dendrites.

SaveQuestion 15 (5 points)
Which of the following is the correct order from most complex to simplest for the levels of organization in the human body?

Question 15 options:

organ systems, organs, tissues, cells

organ systems, tissues, organs, cells

cells, organs, organ systems, tissues

cells, tissues, organs, organ systems

SaveQuestion 16 (5 points)
What do ligaments hold together in a joint?

Question 16 options:

bones

muscles

bone and muscle

cartilage and bone

SaveQuestion 17 (5 points)
Nail roots are to nails as what is to hair?

Question 17 options:

sebaceous gland

melanocyte

keratin

hair follicle

SaveQuestion 18 (5 points)
In the kidneys, both useful substances and wastes are removed from the blood by

Question 18 options:

filtration.

reabsorption.

excretion.

dialysis.

SaveQuestion 19 (5 points)
It’s 7:00 at night and you haven’t eaten anything since lunch. Which part of your brain is telling you that you’re hungry?

Question 19 options:

brain stem

thalamus

hypothalamus

medulla oblongata

SaveQuestion 20 (5 points)
Sensory cells in taste buds respond to which types of flavors?

Question 20 options:

fatty, sweet, meaty, tangy, salty

salty, spicy, juicy, sweet, tangy

sour, tangy, spicy, bitter, sweet

salty, bitter, sweet, sour, umami

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