nerves and hormones
Study online at https://quizlet.com/_b9vkkt
1. impulse a signal transmitted along a neurone
2. neurone A nerve cell that transmits electrical impulses in the ner-
vous system.
3. sensory neurone - one long dendron carries nerve impulses from receptor
cells to the cell body
- cell body in the middle of neuron
- short axon carries impulse from the cell body to CNS
- myelinated axon
4. relay neurone - many short dendrites carry impulses from sensory neu-
ron to the cell body
- axon carries impulse from the cell body to motor neurons
- un-myelinated axon
5. motor neurone - many short dendrites carry impulse from CNS to cell
body
- one long myelinated axon carries impulse from cell body
to effector cells
6. effector cells that act in response to stimulus e.g. muscle or gland
7. receptor
, nerves and hormones
Study online at https://quizlet.com/_b9vkkt
detects stimulus
in sense organs
8. CNS central nervous system; brain and spinal cord
9. axon carry impulse away from cell body
10. cell body part of neurone which contains cytoplasm and other or-
ganelles like nucleus
11. dendrite carries impulses toward the cell body (plural)
12. dendron carries impulses toward the cell body (singular)
13. endoplasmic - RER aids protein synthesis
reticulum - SER aids lipid synthesis
- both molecules are needed by nerve cells to function
14. mitochondria - organelle that is the site of aerobic respiration to release
energy in the form of ATP
15. ribosome - organelle that translates mRNA into a polypeptide chain
by bonding amino acids together
- proteins needed for nerve cell transmission
16. myelin sheath - insulating fatty material to keep impulse travelling inside
axon
17. nodes of Ranvier - gap in myelin sheath between adjacent Schwann cells
- this means impulses travel along axons jumping from
node of Ranvier to the next node of Ranvier
18. Schwann cells - cells that make up the myelin sheath
- the cells wrap around the axon like a coil
19. saltatory con- Rapid transmission of a nerve impulse along an axon, re-
duction sulting from the action potential jumping from one node of
Ranvier to another, skipping the myelin-sheathed regions
of membrane.
Study online at https://quizlet.com/_b9vkkt
1. impulse a signal transmitted along a neurone
2. neurone A nerve cell that transmits electrical impulses in the ner-
vous system.
3. sensory neurone - one long dendron carries nerve impulses from receptor
cells to the cell body
- cell body in the middle of neuron
- short axon carries impulse from the cell body to CNS
- myelinated axon
4. relay neurone - many short dendrites carry impulses from sensory neu-
ron to the cell body
- axon carries impulse from the cell body to motor neurons
- un-myelinated axon
5. motor neurone - many short dendrites carry impulse from CNS to cell
body
- one long myelinated axon carries impulse from cell body
to effector cells
6. effector cells that act in response to stimulus e.g. muscle or gland
7. receptor
, nerves and hormones
Study online at https://quizlet.com/_b9vkkt
detects stimulus
in sense organs
8. CNS central nervous system; brain and spinal cord
9. axon carry impulse away from cell body
10. cell body part of neurone which contains cytoplasm and other or-
ganelles like nucleus
11. dendrite carries impulses toward the cell body (plural)
12. dendron carries impulses toward the cell body (singular)
13. endoplasmic - RER aids protein synthesis
reticulum - SER aids lipid synthesis
- both molecules are needed by nerve cells to function
14. mitochondria - organelle that is the site of aerobic respiration to release
energy in the form of ATP
15. ribosome - organelle that translates mRNA into a polypeptide chain
by bonding amino acids together
- proteins needed for nerve cell transmission
16. myelin sheath - insulating fatty material to keep impulse travelling inside
axon
17. nodes of Ranvier - gap in myelin sheath between adjacent Schwann cells
- this means impulses travel along axons jumping from
node of Ranvier to the next node of Ranvier
18. Schwann cells - cells that make up the myelin sheath
- the cells wrap around the axon like a coil
19. saltatory con- Rapid transmission of a nerve impulse along an axon, re-
duction sulting from the action potential jumping from one node of
Ranvier to another, skipping the myelin-sheathed regions
of membrane.
