Biopsy 4 Flashcards
Nervous system can be divided into __?__ & __?__
CNS - Central nervous system
PNS - Peripheral nervous system
CNS refers to ?
Brain
Spinal cord
PNS consists of ?
Somatic nervous system
ANS - Autonomic nervous system
What does Somatic nervous system control?
Skeleton, skin, etc…
What does ANS consists of?
Sympathetic division
Parasympathetic division
Use of Sympathetic division in ANS.
Excitatory
Fight or flight response
Use of Parasympathetic division in ANS.
Calm
Rest & digest
Which system is responsible for ‘fight or flight response’ ?
Sympathetic division in ANS
What are visible in the skull?
gyri & sulci
What acts as the cushion between the brain and skull?
CSF - Cerebrospinal fluid
What is the basis of the assumption that different regions of the brain are involved in different functions?
Variations in thickness, cell density, complexity and number of neurons in the cerebral cortex.
Name the 4 lobes & their functions in the 2 cerebral hemispheres.
- Occipital lobe: visual processing
- Parietal lobe: touch, balance, movement
- Temporal lobe: hearing, speech comprehension, memory, visual recognition
- Frontal lobe: ovement, thinking, planning
Use of Basal ganglia.
Control voluntary movement
Use of Limbic system.
- navigation in space
- memory formation
- emotional control
Brainstem includes?
Hindbrain
Midbrain
Diencephalon
What does Hindbrain include?
cerebellum
What does Diencephalon include?
thalamus,
hypothalamus,
pituitary
- Nerves in brainstem run up from —?— to —?__.
- Various cells in brainstem control ______.
- body to brain
- control brain‘s general alertness & regulate processes, e.g. breathing, blood pressure and heartbeat
Cranial nerves are part of the ___ nervous system.
somatic
Use of cranial nerves & give Example.
- allow brain to communicate with muscles and sense organs in the head & neck
- e.g. optic nerves —> visual
Nerves of spinal cord are part of __?__ nervous system.
somatic
Brain communicates with the body via __?__ & __?__
spinal cord
cranial nerves
How is touch and pain relayed to the brain and result to movement?
sensory info is sent to the brain via spinal cord —> brain processes —> send motor commands to muscles via spinal cord —> movement
Nerve fibres leave the spinal cord through __?__
vertebrae
