Nervous System
Name 3 functions of the nervous system
Sensation, Integration, Motor output, Cognition, Maintains Homeostasis, Emotion, Transmits Messages, etc.
these cells provide support and protection of neurons, they are smaller than neurons and more numerous
What is Neuroglia
Which lobe of the brain contains the primary visual cortex?
Occipital Lobe
What part of a neuron is made up of protein and fatty substance and insulates the axon?
Myelin Sheath
A neuron that connects sensory and motor nerves
interneuron
2 subdivisions of the PNS
Autonomic and somatic
What type of neurons innervate skeletal muscle?
Motor Neurons
What is the resting potential of a neuron?
-70mV
What is the gap between neurons called?
Synaptic cleft
Special chemicals that transmit info from one neuron to another is called what?
neurotransmitters
Two subdivisions of the Autonomic Nervous System
What is Parasympathetic Division- "rest and digest" and Sympathetic "Fight of Flight"
What are three main parts of the neuron?
dendrites, cell body, axon, axon terminals
What are the 4 main lobes?
1. Frontal
2. Parietal
3. Temporal
4. Occipital
Unmyelinated fibers are considered
grey matter
Name 3 things that protect your spinal cord.
Vertebrae, meninges, CSF
The central nervous system is made of these organs
brain and spinal cord
what does an axon terminal hold?
neurotransmitters
what connects the two brain hemispheres
corpus callosum
what purpose does Myelin Sheath provide?
Allows information to travel more quickly/efficiently
Neurons that send information to your brain when stimulated are called...
sensory neurons
Which ions switch places during an action potential?
Sodium and Potassium
Na+ and K+
What part of the brain serves as a relay station?
what is the gap btw myelin sheaths on the axon called?
Nodes of Ranvier
Which gland is directly posterior to the thalamus?
Pineal Gland
What are the three layers covering the brain from inside to outside? (Layers of the meninges)
Pia, arachnoid, dura mater