Nervous System

Question 1

Nervous system can be divided into 2 different components.

Answer 1

Central Nervous System

Peripheral Nervous System

Question 2

Neurons (CNS)

Answer 2

communication by action potential and neurotransmitter release

Question 3

Glia cells (CNS)

Answer 3

support cells

Question 4

Afferent neurons (PNS)

Answer 4

sensory: information goes INTO CNS

Question 5

Efferent neurons (PNS)

Answer 5

motor and autonomic: information goes OUT of CNS

Question 6

what do efferent neurons alter the function of?

Answer 6

skeletal, smooth, and cardiac muscle, or organs and glands

Question 7

ganglia (PNS)

Answer 7

group of neuronal cell bodies in the PNS

Question 8

The Nervous system can be divided into 2 functional components.

Answer 8

Somatic Nervous System; Autonomic Nervous System

Question 9

Somatic Nervous System

Answer 9

receives sensory information from and controls the function of skeletal muscles of the body. It also has other sensory functions that monitor the external environment (taste, temperature) and sense pain.

Question 10

Autonomic Nervous System

Answer 10

receives sensory information from and controls the function of glands, vasculature and internal organs. Regulates breathing, BP, feeding, elimination, metabolism, etc.

Question 11

T/F Both the Somatic and Autonomic Nervous System have Peripheral and Central Nervous System components.

Answer 11

TRUE

Question 12

7 main parts of the CNS

Answer 12

1) Spinal Cord
2) Medulla Oblongata
3) Pons
4) Cerebellum
5) Midbrain
6) Diencephalon
7) Cerebral Hemispheres

Question 13

Spinal Cord

Answer 13

• C, T, L segments.
• transmits information to: internal organs, muscle, skin, brian
• can process and integrate this information

Question 14

Medulla Oblongata

Answer 14

• Responsible for controlling autonomic functions: breathing, digestion, and BP
• bidirectional communication with spinal cord, periphery, and other brain regions
• receives sensory information for regulation of balance, movement, BP, etc

Question 15

T/F Autonomic afferent synapse in the Nucleus of the Solitary tract in the Pons.

Answer 15

FALSE- Medulla oblongata

Question 16

Pons

Answer 16

Conveys information about movement between the cerebellum and cerebrum. Also involved in control of urination, respiration, and BP

Question 17

Cerebellum

Answer 17

Important for coordination of movement and for posture and balance

Question 18

Midbrain

Answer 18

Controls many sensory and motor functions, including eye movement and the coordination of visual and auditory reflexes

Question 19

Brain Stem is composed of what 3 things and what is it responsible for.

Answer 19

Medulla, pons, and midbrain. BASIC functions (breathing, BP, digestion, elimination; coordinates muscle movement; regulates arousal and awareness)

Question 20

Diencephalon (2 parts)

Answer 20

Thalamus- processes much of the information reaching the cerebral cortex from the rest of the CNS

Hypothalamus- regulates autonomic, endocrine (horomone), and visceral function

Question 21

Cerebral Hemispheres

Answer 21

• Cerebral cortex (neocortex): important for generatino of skilled movements, reasoning, learning, and memory. Large surface area
• Subcortical nuclei including basal nuclei (basal ganglia) that are important for control of movement and posture and some aspects of complex behavior
• can also influence autonomic function

Question 22

Cerebral cortex is divided into 4 lobes

Answer 22

Frontal, Parietal, Temporal, and Occipital

Question 23

Central Sulcus

Answer 23

divides somatosensory cortex from primary motor cortex

Question 24

Pre-central Gyrus

Answer 24

Primary Motor Cortex

Question 25

larger areas of the pre-central gyrus=

Answer 25

finer motor control

Question 26

Post-central Gyrus

Answer 26

Primary Somatosensory Cortex

Question 27

Larger areas of the post-central gyrus=

Answer 27

greater sensitivity