Lecture 1
What are the two major divisions of the nervous system?
Central Nervous System, Peripheral Nervous System
What establishes the electrochemical gradient in a cell?
The sodium-potassium exchange pump
Which side of the spinal cord does sensory information enter?
Dorsal (posterior) side
List the 3 connective tissue membranes of the Meninges:
1. Dura mater
2. Arachnoid mater
3. Pia mater
What is another term for mesencephalon?
midbrain
What are the two main components of the Central Nervous system?
Brain, Spinal cord
Which type of ion channel responds to changing electrical charges on the cell membrane?
Voltage-gated ion channels
Reflex arcs involve 5 things:
1. Receptor
2. Sensory neuron
3. Interneuron
4. Motor neuron
5. Effector
Which space contains cerebrospinal fluid?
Subarachnoid
A groove on the surface of the cerebrum is called a
Sulcus
The efferent division refers to what type of information?
Outgoing (motor) information
What has to happen before an action potential is generated?
An Action potential happens once the threshold is reached (once enough sodium has rushed into the cell).
A hardwired pathway in which a stimulus produces a predictable motor response decribes a:
Reflex arc
What does CFS stand for?
Cerebrospinal fluid
The Primary Motor Cortex is located in what gyrus?
Precentral Gyrus
What does the visceral motor division control?
Regulation of smooth and cardiac muscle
What is the general term for the time delay associated with the inability to initiate another action potential?
Refractory period
When talking about circuit divergence, the information:
is spread out from 1 neuron to multiple neurons
List the 3 places CSF is found:
Subarachnoid space
Central canal of the spinal cord
brain ventricles
1. Establishes emotional states, drives and associated behaviors
2. Links conscious, intellectual functions of the cortex with autonomic & neuroendrocrine functions of the brain stem
3. Facilitates memory storage & retrieval
What are the 3 basic parts of a neuron?
Cell body, dendrites and axon
What does the term 'synapse' mean?
To fasten together
List the 6 general senses:
1. Touch
2. Temperature
3. Pressure
4. Vibration
5. Pain
6. Proprioception
What is formed from blood plasma by the choroid plexus?
CSF
What is the function of the hippocampus?
Storage and retrieval of long-term memories