General Nervous
The nervous system consists of ____?
Masses of neurons, blood vessels, and connective tissue.
How many types of glial cells are in the CNS and PNS?
6 types of glial cells.
What is the PNS responsible for?
The primary role of the PNS is to connect the CNS to the organs, limbs, and skin.
What is the Central Nervous System responsible for?
The central nervous system controls most functions of the body and mind.
What are the four lobes of the brain?
Frontal, Occipital, Parietal, and Temporal.
What does the cell body contain?
It contains the nucleus, cytoplasm, and organelles.
What are the 3 main types of Neurons?
Unipolar, Bipolar, and Multipolar
What 2 parts make up the PNS?
The somatic and autonomic nervous systems.
What two parts make up the Central Nervous System?
The Brain and Spinal Cord.
Which lobe is responsible for hearing?
What are the functions of a sensory receptor?
To monitor hearing, temperature, light, oxygen concentration, and sound intensity.
Which type of neuron has the cell body at the end of the axon?
Multipolar Neuron.
What part of the PNS controls the involuntary movements?
Autonomic Nervous System.
Which is considered the command center of the body, the brain or spinal cord?
The brain.
The frontal lobe.
What are motor nerves responsible for?
They carry impulses to muscles and glands.
What are the Nodes of Ranvier?
The gaps between the Schwann cells on a neuron.
What is the difference between the PNS and CNS locations?
It is located outside of the brain and spinal cord while the CNS is located inside of the brain and spinal cord.
What are the 3 main functions of the CNS?
Sensory input, information processing, and motor output.
What part of the brain maintains temperature?
The Hypothalamus
What is a neuron's job?
To transmit nerve impulses along nerve fibers to other neurons.
What is the Schwann Cell responsible for?
Creating Myelin.
What are the 3 main functions of the PNS?
Conveying motor commands to all voluntary striated muscles in the body, carrying sensory information about the external world and the body to the brain and spinal cord, and maintaining homeostasis in involuntary functions.
What is the spinal cord?
The spinal cord is a column of nerves that connects your brain with the rest of your body, allowing you to control your movements.
About how many nerves are in the brain alone?
Approximately 86 to 100 billion.