Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
What is the function of the nervous system?
|
It is the bodies control center and communication system.
|
|
|
What is sensation?
|
Collecting information- the nervous system senses changes within and out of the body.
|
|
|
What is integration?
|
Processing and evaluating information. The nervous system interprets changes and determines what, if any, response is required.
|
|
|
What is a Response?
|
The nervous system initiates action.
|
|
|
What are the 2 parts of the nervous system?
|
Central and Peripheral
|
|
|
What is in the Central Nervous System (CNS)?
|
The Brain and the Spinal cord.
|
|
|
WHat is in the peripheral nervous system (PNS)?
|
All other nervous tissue in the body besides the brain and spinal cord.
|
|
|
What part of neurons are most commonly found in the CNS?
|
Cell Bodies.
|
|
|
What is the majority of the Brain and Spinal Cord composed of?
|
Neurons and bundles of axons (tracts or pathways)
|
|
|
There are a few cell bodies that occur in the PNS, where do they occur?
|
In the clusters called Ganglia
|
|
|
What is most of the PNS composed of?
|
Nerves
|
|
|
What are Nerves?
|
Bundles of axons or nerve fiber wrapped in connectinve tissue.
|
|
|
What are the 3 classifications of Nerves?
|
Sensory- contain only sensory neurons
Motor- contain only motor neurons. Mixed- contain both. (most neourons are mixed.) |
|
|
How many pairs of Cranial Nerves are there?
|
12
|
|
|
How many pairs of Spinal nerves are there?
|
31
|
|
|
What is another word for afferent nerves?
|
Sensory nerves
|
|
|
What is another word for efferent nerves?
|
Motor nerves
|
|
|
What are sensory receptors?
|
Special organs that detect change in the internal and external environment.
|
|
|
What are the general receptors?
|
Touch, Pressure, Heat, Cold, Pain, & Proprioception/Stretch
|
|
|
What are the Special receptors?
|
Smell, taste, sight, hearing & equilibrium.
|
|
|
What areas are sensed by the Somatic Sensory Division?
|
The Skin, Skeletal Muscles, bones and a few other places.
|
|
|
What areas are sensed by tht Visceral Sensory Division?
|
The Digestive tract, Urinary tract, reproductive organs, and the ventral body cavity. You may be unaware of these sensations.
|
|
|
What direction do Efferent neurons travel?
|
They travel away from the CNS.
|
|
|
What Direction do Afferent Neurons travel?
|
They travel toward the CNS.
|
|
|
What do Somatic Motor Neurons control?
|
Skeletal muscle.
|
|
|
What do Autonomic Motor Neourons control?
|
The smooth muscle within viscera (organs), cardiac muscle, and glands.
|
|
|
What are the 2 divisions of the Autonomic Nervous System?
|
Sympathetic and Parasympathetic nervous systems
|
|
|
What does the Sympathetic nervous system control?
|
It controls the smoot muscle in stress situations.
|
|
|
What does the parasympathetic nervous system control?
|
Smooth muscle in non-stress situations.
|
|
|
Name 3 things about Neurons?
|
They have a high metabolic rate, can receive stimulus and convert it to AP, are amitotic after fetal development, can live for up to 100 years.
|
