Chapter 14: Intro to the nervous system Flashcards
The two main structural divisions of the nervous system are?
- Central
- Peripheral
The Central Nervous system (CNS) includes…
- Brain
- Brainstem
- Spinal cord
Peripheral Nervous system (PNS) includes…
- Crainal nerves (attached to the brain/brainstem)
- Spinal nerves (attached to spinal cord)
take note that these are the ones that carry informaton too and from the CNS.
The sensory nervous system serves what purpose?
Transmits information from receptors to the CNS
The motor nervous system serves what prupose?
Transmits information from CNS to the rest of the body.
The sensory nervous system can be further broken down into…
- Somatic Sensory
- Visceral Sensory
The somatic sensory serves what purpose?
Receptors that recieve information from the skin, fascia, joints, skeletal muscles, and special tissues.
The function of the visceral sensory is to…
recieve sensory information from the viscera (organs).
The function of the somatic motor neurons is to..
Voluntary nervous signals sent out to the skeletal muscles.
Autonomic nervous system function is…
“Involuntary” nervous system which innervates cardiac muscle, smooth muscle, glands.
The two main classifications of cells are…
- Neurons
- Glial Cells
Neurons serve to…
Generate and carry electricla signals
Glial cells serve to…
Perform various supportive functions such as…
- protect neurons
- Regulat ionic balance in tissue
- Immune functions
Dendrites serve what functional purpose?
Dendrites serve as the “recieving end” of the neuron in that they make connections with and recieve signals from other neurons and from receptors.
Function purpose of the soma
This is where the signal is interpreted/integrated along with other cellular functions.
Axon serves the purpose of…
Signal transmission; this means that it is the axon in which the signal travels down and passes the signal on to other cells.
Axons communicate with other neurons, muscles, glands, etc., by releasing compounds known as..
Neurotransmitters
Number 3 in this picture are neurons found in the CNS and lie either in-between two neurons such as sensory-motor, etc.
Internerons
Identify number 1 in this photo
Dendrites
Identify number 2 in this photo
Axon Hillock
Number 3 is the…
Soma (Cell Body)
Number 4 in this photo is the region which tramsits the electrical signal towards the terminals
Axon
Number 5 serves as the final point in the transduction of the propogation of the neural electrical signal and is where neurotransmitter chemicals are released from
Synaptic Terminals
Structurally, this is known as a…
Bipolar neuron
Structurally, this is known as what type of neuron…?
Unipolar
Structurally this is what type of neuron?
Multipolar
