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22 Cards in this Set
- Front
- Back
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The body's nervous system consists of: |
All the nerve cells of the central and peripheral nervous systems. |
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The central nervous system consists of: |
The brain and the spinal cord. |
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Neural cables in the PNS that contain many axons called: |
Nerves |
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Neurons that carry information from the body's tissues and sensory receptors to the brain: |
Sensory neurons |
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Neurons that carry information from the CNS to the muscles and glands: |
Motor neurons |
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These neurons are a part of the CNS and communicate between sensory inputs & motor outputs: |
Inter neurons |
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Nervous system that consists of sensory and motor neurons that connect the CNS to the rest of the body: |
Peripheral Nervous System (PNS) |
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The PNS is made up of two parts which are: |
Autonomic & Somatic Nervous systems |
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What does the Somatic Nervous System control? |
Body's skeletal muscles |
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The Autonomic Nervous System is composed of two parts: |
The Sympathetic NS: Arouses the body (e.g. dilates pupils, releases bronchi, inhibition activity, releases bladder) The Parasympathetic NS: Calms the body (e.g. contracts pupils)
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The simplest neural pathways are those that: |
Govern our reflexes |
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The Endocrine system sends out what kinds of messages? |
Slower messages but longer lasting |
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Chemical messengers of the endocrine system are called: |
Hormones |
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The Adrenal glands: |
Located on top of the Kidneys and release/s hormones that arouse the body in times of stress |
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Which endocrine gland regulates body growth? |
Pituitary gland |
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What is a Neuron composed of? (5 parts, 1 operation) |
Cell Body- the cell's life support center Dendrites- receives messages from other cells Axon- passes messages away from the cell body to other neurons, muscles or glands Myelin sheath- covers the axon of some neurons and helps speed neural impulses Terminal branches of axon- form junctions with other cells Neural Impulse: Electrical signal traveling down the axon |
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The branching extensions of nerve cells that receive incoming signals from sensory receptors or from other neurons are called the: |
Dendrites |
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The part of a neuron that transmits neural messages to other neurons or to muscles and glands is called the: |
Axon |
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Some axons are encased by a fatty tissue called a: |
Myelin Sheath |
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An action potential refers to a: |
Neural Impulse |
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A neural impulse is generated only when excitatory minus inhibitory signals exceed a certain: |
Threshold |
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The spatial junction between the axon of the sending neuron & the dendrite or cell body of the receiving neuron is called a: |
Synapse |
