Nervous System

Question 1

Functions of Nervous System

Answer 1

Nervous system
monitors and
regulates the
body

Memory,
behavior,
bodily functions,
movement

Homeostasis

Question 2

Organisation
(2 major divisions)

Answer 2

 A complex network of
nerve cells (neurons) &
support cells

 Consists of brain, spinal
cord, & peripheral
nerves

 2 major divisions:

 Central nervous
system (CNS)
 Peripheral nervous
system (PNS)

Question 3

Nervous Tissue

Answer 3

ability to be stimulated, conduct a stimulus,& respond to stimulation

Electrical impulses travel in
between neurons & between
neurons and other cells

Impulses allow
communication between
nervous system and other
tissues
Nerves = Ne

Question 4

Neurons
Types (3)
Function

Answer 4

Carry electrical signals to & from brain/spinal cord & body periphery

Types
 Sensory neurons: monitor internal & external environment & relay data to brain

 Interneurons: relay signal through the brain

 Motor neurons: carry out response

Question 5

Types of sensory receptors
(6)

Answer 5

Photoreceptors: sensitive to
light

Chemoreceptors: sensitive to
chemical changes

Thermoreceptors: stimulated by
temperature changes

Nociceptors: pain receptors

Mechanoreceptors: stimulated by pressure and movement

Proprioceptors: specialized mechanoreceptors in skeletal muscle
and joints

Question 6

Proprioceptors
(major types)

Answer 6

Joint receptors: pressure,
tension, movement

Muscle spindles: stretch
reflex

Golgi tendon organs: inverse
stretch reflex

Combine to create
kinesthetic sense