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.
Question 2 (5 points)
Which receptors respond to a scraped knee?
Question 2 options:
Question 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.
Question 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:
Question 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:
Question 6 (5 points)
The heart, liver, and stomach are each examples of
Question 6 options:
an organ system.
Question 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
Question 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:
Question 9 (5 points)
What is the function of the central nervous 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
Question 10 (5 points)
Refer to the figure below. Which structure carries impulses away from the cell body?
Question 10 options:
Question 11 (5 points)
Which of the following sensory receptors would lead you to squint in bright light?
Question 11 options:
Question 12 (5 points)
An imbalance in blood glucose levels causes which of the following diseases?
Question 12 options:
Question 13 (5 points)
The most important function of the skin is
Question 13 options:
Question 14 (5 points)
When an impulse reaches the end of a neuron, it triggers the release of
Question 14 options:
Question 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
Question 16 (5 points)
What do ligaments hold together in a joint?
Question 16 options:
bone and muscle
cartilage and bone
Question 17 (5 points)
Nail roots are to nails as what is to hair?
Question 17 options:
Question 18 (5 points)
In the kidneys, both useful substances and wastes are removed from the blood by
Question 18 options:
Question 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:
Question 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