Term
|
Definition
|
|
Term
|
Definition
| respond to sensory receptors |
|
|
Term
|
Definition
| prominent cell of nervous system |
|
|
Term
|
Definition
1. Sensory Neuron
2. Motor Neuron
3. Interneuron |
|
|
Term
|
Definition
| Detect INTERNAL/ EXTERNAL sensory stimulus [touch/taste] |
|
|
Term
|
Definition
| Cause an effect [smooth/skeletal muscle] |
|
|
Term
|
Definition
| connects sensory and motor neurons |
|
|
Term
Afferent Neurons
What do they do? |
|
Definition
-sensory neuron
-carry impulses FROM sensory RECEPTORS --> CNS |
|
|
Term
Efferent Neurons
What do they do? |
|
Definition
-motor neurons
-carry impulses FROM CNS --> EFFECTORS [muscle and glands] |
|
|
Term
|
Definition
-Interneurons
-located in brain & spinal cord
-provides more complex reflexes & associative function [learning & memory] |
|
|
Term
| Central Nervous System [CNS] |
|
Definition
| brain and spinal cord interneurons |
|
|
Term
| Peripheral Nervous System [PNS] |
|
Definition
| sensory and motor neurons |
|
|
Term
|
Definition
| sensory neuron registering INTERNAL/EXTERNAL stimuli |
|
|
Term
|
Definition
| Somatic NS and Autonomic NS |
|
|
Term
|
Definition
|
|
Term
Autonomic NS
Branches off to what 2 things? |
|
Definition
Involuntary
1. Sympathetic NS
2. Parasympathetic NS |
|
|
Term
|
Definition
| "FIGHT/FLIGHT" [increase in heart rate/rapid breathing] |
|
|
Term
|
Definition
| "REST & REPOSE" [bringing symp. back down] |
|
|
Term
| Sensory Pathway --> #1 --> Spinal Cord --> #2 |
|
Definition
1. Brain
2. Motor Pathway |
|
|
Term
| What are the parts of a neuron? |
|
Definition
Cell Body
Axon which contains the myelin sheath
Dendrites |
|
|
Term
|
Definition
| supports the neurons structurally and functionally |
|
|
Term
| What two Neuroglia produces the myelin sheath that surrounds the axon? |
|
Definition
1. Schwann Cells
2. Oligodendrocytes |
|
|
Term
|
Definition
| Produces myelin sheath in the PNS |
|
|
Term
|
Definition
| produces myelin sheath in the CNS |
|
|
Term
|
Definition
| bundled myelinated axons in the PNS |
|
|
Term
| Nerve Impulses are caused by what? |
|
Definition
|
|
Term
| What is the gray matter in the CNS |
|
Definition
|
|
Term
| What is the white matter in the CNS? |
|
Definition
|
|
Term
|
Definition
cytoplasmic [inside a neuron]
(Na+) |
|
|
Term
|
Definition
Extracellular Fluid Side [Outside]
(K+) |
|
|
Term
|
Definition
|
|
Term
| What is the charge when a neuron is at resting potential? |
|
Definition
|
|
Term
| What 2 things causes a cell to become more neg. charged? |
|
Definition
1. Sodium-Potassium Pump [Na+ K+ pump]
2. Ion Leakage Channel |
|
|
Term
|
Definition
| 2 K+ pumps into the cell for every 3 Na+ pumped out |
|
|
Term
|
Definition
| Allows more K+ to diffuse OUT than Na+ to diffuse IN |
|
|
Term
|
Definition
| Balance between Diffusional and Electrical Forces |
|
|
Term
| What are the two types of potentials? |
|
Definition
1. Graded Potential
2. Action Potential |
|
|
Term
|
Definition
| small transient changes in membrane potential due to the gated ion channels |
|
|
Term
Gated Ion Channels
vs
Ion Leakage Channels |
|
Definition
Gated- channels that can open or close
Leakage- Channels are always open |
|
|
