Auditory receptors detect light.
What is detected by chemoreceptors?
Of the following, which is NOT a sense organ?
Choose the correct order of events for the picture below.
You feel pain.
Nerve signals travel from the spinal cord to the brain.
Receptors in your hand detect the heat and send signals to the spinal cord
A memory is created to prevent you from touching a hot pot again.
Nerve signals travel from your spinal cord to your arm muscles and you pull your hand away.
Where in your body do you find nerve cells? Choose the best answer.
If an area of your body is particularly sensitive, what can you conclude about that area?
Place the following events in sequence:
Electrical impulses travel along nerve fibers
Your eardrum begins vibrating
The hammer, anvil, and stirrup begin moving
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
lens | arrow_right_alt | in the retina, receives images that have passed through the lens of the eye |
rods and cones | arrow_right_alt | colored part of the eye |
retina | arrow_right_alt | the clear tissue that covers the front of the eye |
cornea | arrow_right_alt | the adjustable opening in the center of the eye through which light enters |
pupil | arrow_right_alt | the transparent structure behind the pupil that changes shape to help focus images on the retina |
iris | arrow_right_alt | the light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information |
The movement of fluid in the ear helps to signal the brain to help it control balance.
Humans are warm-blooded organisms that maintain a constant body temperature of around 37°C (98.6°F). The diagram shows the changes that take place to keep the human body temperature constant.
Brian claims that only the muscular system is involved when body temperature drops. He says that shivering occurs when the body’s muscles contract rapidly, producing heat, and that this muscle action keeps the body warm.
Using complete sentences, identify two pieces of evidence from the diagram that either support or refute Brian’s claim.