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OCCC BIO 1314 AP 1- Units 7 questions with answers
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OCCC BIO 1314 AP 1- Units 7 questions with answers
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OCCC BIO 1314 AP 1- Units 7 questionswith answers
One thing your laptop has that the exam WON'T - ANSWER: ➡ the answers
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What is purpose of the nervous system? - ANSWER: ➡ The body's master controlling &
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communicating system
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3 functions of the nervous system - ANSWER: ➡ sensory input, integration, motor output
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Sensory input = - ANSWER: ➡ monitors stimulations
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Integration = - ANSWER: ➡ interpretation of input
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Motor output = - ANSWER: ➡ response to input
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Central nervous system (CNS) contains: - ANSWER: ➡ Brain & spinal cord,
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Integration & control center w w w
Peripheral Nervous System (PNS) contains: - ANSWER: ➡ cranial and spinal nerves,
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§Carries messages to or from spinal cord & brain
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Neuron - ANSWER: ➡ communicating cell of NS
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2 types of neurons in PNS - ANSWER: ➡ afferent and efferent
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,sensory (afferent) neurons - ANSWER: ➡ neurons that carry incoming information from the body's
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tissues and sensory receptors to the brain and spinal cord
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motor (efferent) neurons - ANSWER: ➡ neurons that carry outgoing information from the brain and
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spinal cord to the muscles and glands (effector tissues)
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The two parts of motor division are: - ANSWER: ➡ Somatic Nervous System, Autonomic (Visceral)
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Nervous System (ANS)
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somatic nervous system - ANSWER: ➡ the division of the peripheral nervous system that controls
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the body's skeletal muscles
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autonomic (visceral) nervous system - ANSWER: ➡ Controls smooth muscle, cardiac muscle, glands,
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organs (involuntary)
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2 divisions of the autonomic nervous system - ANSWER: ➡ parasympathetic and sympathetic
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neuron characteristics (3) - ANSWER: ➡ §Respond to physical & chemical stimulations
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§Conduct electrochemical impulses
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§Release chemical regulators (neurotransmitters)
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3 types of Neuron Classification - (Structural) - ANSWER: ➡ §Multipolar — three or more processes
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§Bipolar — two processes (axon & dendrite)
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§Unipolar — one short process w w w w
sensory (afferent) neurons - ANSWER: ➡ neurons that carry incoming information from the sensory
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receptors to the brain and spinal cord
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, Interneurons (association neurons) - ANSWER: ➡ neurons that carry messages from one neuron to
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another, transmit impulses w/in CNS
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motor (efferent) neurons - ANSWER: ➡ neurons that carry outgoing information from the brain and
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spinal cord to the muscles and glands, (transmit impulses away from CNS)
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Two cell types of the nervous system - ANSWER: ➡ neurons and neuroglia (glial cells)
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Neurons - ANSWER: ➡ transmit electrical signals
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Neuroglia - ANSWER: ➡ do not transmit electrical signals (THEY support neurons)
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supporting cells (neuroglia) - ANSWER: ➡ §Physical/chemical support for neurons
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§Insulate neurons w
§Guide developing neurons to their proper connections
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§Promote health & growth (repair)
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§Reproduce by mitosis w w
Astrocytes - ANSWER: ➡ §Most abundant glial cells
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§Attach to neurons & cover capillaries (provide a blood-brain-barrier)
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&
Provide structural and metabolic support for neurons.
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Microglia - ANSWER: ➡ small phagocytic (immune) cells w/ spiny processes
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&
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