Chapter 15, Brain and cranial nerves Flashcards
Gray matter
Forms the cortex, which covers the surface of the adult brain.
White matter
Deep to the gray matter of the brain
The brain is protected by which structures
Bony cranium, protective connective tissue, cerebral spinal fluid, BBB
Falx cerebri
Separates left to right cerebral hemispheres
Tentitorium cerebelli
Separates cerebrum from the cerebellum
Falx cerebelli
Separates left to right cerebellar hemispheres
Diaphragma sellae
The small septum between the pituitary and hypothalamus
Ventricles
Cavities within the brain that contain cerebral fluid
BBB(blood-brain-barrier)
Regulates what substances can enter the brain
What three locations is BBB not commonly seen in
Choroid process, Hypothalamus, Pineal gland
Cerebrum
Location for the conscious thought process
Corpus callosum
Connects the left and right cerebral hemisphere
Frontal lobe
Involved mostly with personality functions
Parietal lobe
involved in general sensory functions, (touch and pain)
Temporal lobe
hearing and smell
occipital lobe
Stores memories
Insula
memory and functions of taste
Motor areas
controls voluntary motor functions primarily in skeletal muscle
Sensory areas
Provides awareness for sensation
Association areas
Stores information
Broca area
Helps with vocalization
Premotor/somatic cortex
Processes motor information
Somatosensory association area
Interprets sensory information
Wernicke area
Recognizes and comprehends spoken and written languages
Gnostic area
Integrates all sensory, visual, and hearing
Diencephalon
Epithalamus, thalamus, and hypothalamus
Epithalamus
The pineal gland, habenular nuclei
Midbrain
Substantia nigra(produces dopamine), superior colliculus(visual reflex), inferior colliculus(hearing)
Pons
houses sensory and motor cranial nerves
Medulla oblongata
Controls homeostatic process (reflexes and ventilation)
Cerebellum
Stores memories
Limbic system
A ring around the diencephalon that continuously experiences emotions
Cranial nerve 1
Olfaction=smell
Cranial nerve 2
Optic=vision
Cranial nerve 3
Oculomotor=Muscles that move the eyelid
Cranial nerve 4
Trochlear= supplies the superior oblique
Cranial nerve 5
Trigeminal= for touch, temperature, and pain
Cranial nerve 6
Abducens= innervates the lateral rectus
Cranial nerve 7
Facial= increases the secretion of the lacrimal glands
Cranial nerve 8
Facial cont.=tatse from the tongue
Cranial nerve 9
Vestibulocochlear= vestibular- impulses for equilibrium. Cochlear-impulses for hearing
Cranial nerve 10
Glossopharyngeal= innervates pharynx muscle
Cranial nerve 11
Vagus=Innervates pharynx and larynx muscle
Cranial nerve 12
Accessory=Innervates trapezius and sternocleidomastoid
Cranial nerve 13
Hypoglossal=moves tongue muscles