Answers 100% Correct
What is the nervous system? This system sends messages back and forth between the
brain and the body (neurotransmitter must pass across the synapse to carry the message from the
nerve to the brain)
What are the 3 sets of nerve cells? - Sensory (receives the stimulus)
- Motor (connects the muscle or gland)
- Relay (connects sensory to the motor)
What is the stimulus response pathway? Stimulus - Receptor - Control Centre - Effectors -
Response
Parts of Neurones? - Cell body: contains the nucleus as well as other organelles such as
the mitochondria and directs the activities of the rest of the cell)
, Body In Balance 2024 Exam Questions And
Answers 100% Correct
- Dendrites: short branching structures that receive impulses and direct them to the cell body
(sensory neurons have one long dendrite called a dendron)
- Axon: a long extension of the cell body that receive impulses away for the cell body
- Myelin sheath: a fatty insulating cover around the axon and the dendron
- Axon Terminals: branch from the axon and are where impulses are passes on to the next cells or
to an effector (muscle or gland)
Parts of the nervous system? - Brain (central nervous system)
- Spinal cord
What is the function of the brain? - Controls body coordination
- Receives and sends information