Chapter 14 objectives Flashcards
(42 cards)
Olfactory ( I )
- Sensory
- Smell
Optic ( II )
- Sensory
- Vision
Oculomotor ( III )
- Motor ( Somatic & Autonomic )
- Movement of eyeball & upper lid
Trochlear ( IV )
- Motor ( Somatic )
- movement of eye balls
Trigeminal ( V )
- Mixed ( sensory & motor * Somatic * )
- Touch , pain, thermal sensations from scalp , face and oral cavity
- Chewing
Abducens ( VI )
-motor ( Somatic )
Movement of eyeballs
Facial ( VII )
- Mixed
- Sensory
- Motor ( Autonomic & Somatic )
- Taste from anterior 2/3 of tongue
- Touch , pain, temperature sensations from skin in ear canal
- Secreation of tears & saliva
Vestibulocochlear ( VIII )
- Sensory
- Hearing and equilibrium
Glossopharyngeal ( IX )
Mixed -Sensory Motor ( Somatic ) Motor ( Autonomic ) - Taste from anterior 1/3 of tongue - assists in swallowing -Monitors blood pressure and oxygen and carbon dioxide levels in blood
Vagus ( X )
- Mixed
- Sensory
- Motor ( somatic )
- Motor ( autonomic )
- Taste from epiglottis
- proprioception from throat and neck muscles
Hypoglossal ( XII )
- Motor
- Somatic
- Movement of tongue during speech & Swallowing
Accessory Nerve ( XI)
- Motor
- supply movement of skeletal muscles of neck
• Prosencephalon
Forebrain
• Mesencephalon
Mid-brain
• Rhombencephalon
Hind-brain
Cranial Meninges
- Dura Mater
- Arachnoid
- Pia mater
Dura special features
- forms venous sinus ( blood filled endothemim - lined vessel )
- no epidural space
What are the dural extentions
- falx cerebri ( separates 2 cerebral hemispheres
- flax cerebelli ( separates two cerebellar hemispheres
- Tentorium cerebelli
( separsted the cerebrum from cerebellum
Blood brain barrier ?
protects brain from harmful substances and pathogens by restricting passage into brain
does the BBB Consist of tight junctions & thick basement membrane of the capillaries
True
What do astrocytes do in BBB
regulate peremablity of the BBB by secreting chemicals
Internal carotid & vertebral arteries
Carry blood to brain
Internal Jugular veins
Return blood from brain
Metabolism and source of ATP
- 20% of oxygen & glucose is consumed ( weighs on 2% of body weight )