Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


questions on communication and homeostasis and the nervous system

What is a stimulus? A change in the internal or external environement
What is a receptor? Detects stimuli. They are specfic and can can only detetct a particular stimulus
What is an effector Effectors bring about a response to the stimulus to produce an effect eg. muscle or gland
What is cell signalling? Communication between distant or adjacent cells. In nerves, cells communicate by a chemical called neurotransmitters which send signals to other cells.
What is the purpose of cell surface receptors? They allow cells to recognise chemicals involved in cell signalling
Why is it important that organisms respond to stimuli? To increase their chances at survival
Give one reason why communication systems are needed in multicelluar organisms. To ensure that the organisms activities are coordinated and working effectively
What is a sensory neurone? Transmits nerve impulses from receptors to the CNS
What is a motor neurone? Transmits nerve impulses from CNS to effectors
What is a relay neurone? Transmit nerve impulses between sensory neurones and motor neurones
What are dendrites and dendrons? They carry nerve impulses toward the cell body
What is the structure of a sensory neurone? Short dendrites and one long dendron that carries nerve impulses from receptor cells to the cell body. They also have one axon that carries nerve impulses from cell body to CNS
What is the structure of a motor neurone? Many short dendrites that carry nerve impulses from CNS to cell bod, one long axon that carries nerve impulses from cell body to effector
What is the structure of a relay neurone? Many short dendrites that carry nerve impulses from sensory neurones to the cell body and many short axons that carry nerve impulses from the cell body to motor neurones
What is the order of evenst that takes place when a stimulus is detected? Stimulus - Receptor - Sensory Neurone to CNs - Motor Neurone to effector - Response
What is a transducer? Converts one form of energy into another. Sensory receptors convert the energy of a stimulus into electrical energy
Created by: hassan-m
Popular Biology sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards