3.1 Organization of the Nervous System

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Sensory Input

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32 Terms
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Sensory Input

Gathering information to monitor changes occurring inside and outside the body.

<p>Gathering information to monitor changes occurring inside and outside the body.</p>
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Stimuli

change in movement or structure of object

<p>change in movement or structure of object</p>
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Integration

To process and interpret sensory input and decide if action is needed

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Motor output

A response to integrated stimuli. It response activates muscles or glands

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Two different types of Nervous System

Central Nervous System (CNS) and Peripheral Nervous System (PNS)

<p>Central Nervous System (CNS) and Peripheral Nervous System (PNS)</p>
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Central Nervous System

Runs through the Central part of the body.

<p>Runs through the Central part of the body.</p>
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Give an example of Central Nervous System

Brain and Spinal Cord

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What are the 2 types of Peripheral Nervous System?

Sensory (afferent) division and Motor (efferent) division

<p>Sensory (afferent) division and Motor (efferent) division</p>
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Sensory (afferent) division

Conveys impulses to the CNS

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Two types of Sensory (afferent) division?

Somatic sensory fibers and Visceral Sensory fibers

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What are Somatic sensory fibers?

Deliver impulses from the skin, skeletal muscle, and joints

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What are Visceral Sensory fibers?

Deliver impulses from visceral (internal) organs. Example: Heart, lungs.

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What is Motor (efferent) division?

Carries impulses from the CNS to effector organs: Muscles and glands

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Two types of Motor (efferent) division

Somatic (voluntary) nervous system and Autonomic (involuntary) nervous system.

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Two types of Autonomic (involuntary) nervous system

  • Sympathetic: flight or flight

  • Parasympathetic: Rest and digest.

<ul><li><p>Sympathetic: flight or flight</p></li><li><p>Parasympathetic: Rest and digest.</p></li></ul>
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Flight or flight means which type of autonomic nervous system?

Sympathetic

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Parasympathetic nervous system is responsible for

Rest and digest

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4 regions of Brain

Cerebrum, Diencephalon, Brain Stem and Cerebellum

<p>Cerebrum, Diencephalon, Brain Stem and Cerebellum</p>
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The 4 lobes of the cerebrum

  • Frontal Lobe

  • Parietal Lobe

  • Occipital Lobe

  • Temporal Lobe

<ul><li><p>Frontal Lobe</p></li><li><p>Parietal Lobe</p></li><li><p>Occipital Lobe</p></li><li><p>Temporal Lobe</p></li></ul>
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What is frontal lobe responsible for?

Decision making

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What is Parietal lobe responsible for?

Touch

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What is Occipital lobe responsible for?

Sight

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What is Temporal lobe responsible for?

Smell and hearing

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3 parts of Diencephalon

Thalamus, Hypothalamus and Epithalamus

<p>Thalamus, Hypothalamus and Epithalamus</p>
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What is Thalamus?

Relay station for sensory impulses (taste, sight, hearing, equilibrium) except for olfactory neurons (sense of smell)

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Which part of Diencephalon has pituitary gland?

Hypothalamus

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What is the function of Hypothalamus

Controls and maintains homeostasis. Also involved in emotions, learning and motivation

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3 types of Brain Stem

Midbrain, Pons and Medulla oblongata

<p>Midbrain, Pons and Medulla oblongata</p>
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Midbrain function

Reflex centers for vision and hearing

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Pons function

nuclei involved in the control of breathing and sleep

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Medulla oblongata is the control center of? (Hint: there are 5)

  • Heart rate control

  • Blood pressure regulation

  • Breathing

  • Swallowing

  • Vomiting

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What is the function of Cerebellum?

Provides coordination of body movements to maintain balance coordination and posture

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