Nervous system functioning (chapter 2)

Question 1

Central Nervous System

Answer 1

Composed of the brain and the spinal cord
Its primary role is to process information received from the body’s external and internal environments and to active an appropriate response

Question 2

Afferent tracts

Answer 2

Transmit sensory messages from the Peripheral Nervous System to the brain

Question 3

Efferent tracts

Answer 3

Transmit motor messages from the brain to the Peripheral Nervous to the brain

Question 4

Peripheral Nervous System

Answer 4

Carries information TO the CNS from the body’s muscles, organs and glands and from the sensory organs
Carries information FROM the CNS to the body’s muscles, organs and glands

Question 5

Somatic Nervous System
Voluntary and conscious

Answer 5

Related to voluntary motor movement
Receives sensory information at receptor sites in the body - sent via afferent tracts to brain where info is received, processed and a response is coordinated
- Motor info is carried along afferent tracts to skeletal muscles to control their activity

Question 6

Autonomic nervous system (automatic, unconscious)

Answer 6

Regulates visceral muscles, organs and glands and transmits information to the CNS about their activity
- Functions continuously, maintaining survival

Question 7

Sympathetic Nervous System (Autonomic)

Answer 7

Responsible for increasing the activity of most visceral muscles, organs and glands, preparing the body to respond to a threat, stressor or vigorous activity such as sport

Question 8

Parasympathetic Nervous System (Autonomic)

Answer 8

Responsible for maintaining optimal and balanced functioning of visceral muscles, organs and glands as well as decreasing them to normal functioning after experiencing heightened bodily arousal

Question 9

Enteric Nervous System (autonomic)

Answer 9

Dedicated to the gastrointestinal tracts and therefore helps regulate digestions