3. Body control Flashcards
Motor
= movement
Nervous system
Cranial nerves/ spinal
= 12 pairs of cranial nerves emerge from the brain
- have several functions that are critical in day to day life
= 31 pairs of spina nerves emerge from the spinal cord
- receive sensory information from peripheral and
regulates activity of trunk and limbs
LEARN PICTURE
What does the Central nervous system consist of?
= The brain and spinal cord
The Bain?
= major control centre
- cerebrum (cerebral cortex) divided into 2 cerebral hemispheres
- each hemisphere coordinated the opposite side of the body
- highly folded with gyri (ridges) and sulci (groves) increasing surface area
- Each side has 5 lobes
- Frontal, parietal, temporal, occipital and insula - each
with a different function
- Frontal, parietal, temporal, occipital and insula - each
- protected by skull (bone), membrane and cerebrospinal fluid (CSF)
The spinal cord?
= main pathway connecting brain and peripheral nervous system
- nerves within the spinal cord group together in different bundles called tracts
- ascending tracts carry info from the body up to the brain / descending tracts carry info from the brain down to initiate movement and control body functions
- protected by bone and CSF
Frontal lobes
- speech
- conscious intellect
- judgement
- learned voluntary motor function
Parietal lobes
- recognition and correlation of sensation
e. g. facial recognition
Temporal lobees
= hearing and memory
Occipital lobes
= primary visual cortex
The insula
- emotions
- pain perception
- social engagement
Cerebellum
- coordination
- balance
- posture
- learn movement
Thalamus
- relay station
- sensory processing
Hypothalamus
= controls homeostasis and ANS
- regulates thirst, feeding, pituitary hormones, temp, BP
Limbic system
- group of structures which form emotional feelings, interacts with cognitive brain
Reticular activating
= part of reticular formation “wake up” which stimulates cerebral cortex, filters sensory input
(motivation attention)
