What is situated at the posterior of the brain and is dedicated to the reception and processing of visual information?
Occipital Lobe
Area 17 forms?
Primary Visual Cortex
Areas 18 & 19 form?
Visual Association Cortex
What responds differentially to different types of visual input such as movement, color, & shape?
Visual Association Cortex
Is not an anotomically seperate lobe, but is made up of the medial margins of the frontal, parietal, & temporal lobes.
Limbic Lobe
Comprises the limbic lobe as well as the amygdala, hippocampus, & other structures.
Limbic System
Is involved in emotional & sexual function, feeding behavior, & tempature regulation.
Limbic System
2 structures of the limbic system that are particularly important to human communication.
1. Hippocampus
2. Amygdala
This is involved with learning & memory, allowing a person to form new memories & transfer them from short-term to long-term memory.
Hippocampus
This is involved in assigning emotions to events & behaviors, plus memory building deciding what facts & events are important enough to commit to long-term memory.
Amygdala
Major commisural pathway linking the 2 hemispheres of the brain.
Corpus Callosum
Found in the medial parts of the brain & arranged longitudinally running from the anterior to the posterior regions of the brain.
Corpus Callosum
Can link areas of cortex within the same hemipshere or in adjacent areas, & can be short or long.
Association Fibers
2 major bundle of nerve fibers that form the primary links between the cortex and other regions of the CNS.
1. Internal Capsule
2. Corona Radiata
What contains several relativley large clusters of nerve cell bodies, including the caudate, globus pallidus, putamen, & substantia nigra.
Basal Nuclei
What neurotransmitter is involved with the basal nuclei?
Dopamine
If the basal nuclei is damaged a patient may experience.
Excessive Involuntary & Uncontrollable Movements, Such as Tics & Tremors (Parkinsons)
Regulates visceral and emotional behavior & is not under concious control.
Hypothalmus
The brainstem is a collective term for these 3 seperate but tightly linked structures.
1. Midbrain
2. Pons
3. Medulla
What is the site of many reflexes involved in respiration, body temperature, swallowing, digestion, & origin of the cranial nerves?
Brainstem
What is the core of the brainstem that controls complex patterns of movement involved in breathing, cardiac function, & swallowing (AKA visceral functions)?
Reticular Formation
This controls our state of alertness & level of conciuosness & is also part of the brainstem.
Reticular Activating System
A short structure consisting of the 2 cerebral peduncles & the superior & inferior colliculi.
Midbrain
2 masses of grey matter in the midbrain that project to the MEDIAL geniculate nucleus of the thalamus & are involved in auditory processing.
Inferior Colliculli
2 masses of grey matter in the midbrain that project to the LATERAL geniculate nucleus of the thalamus & are involved in visual processing.
Superior Colliculi
Midbrain is the point of origin for these 2 cranial nerves.
1. CN III Oculomtor
2. CN IV Trochlear
Located inferior to the midbrain & anterior to the cerebellum,
Pons
Acts as a bridge between the cerebellum and the rest of the nervous system.
Pons
Pons is the point of origin for these 4 cranial nerves.
1. CN V Trigeminal
2. CN VI Abducent
3. CN VII Facial
4. CN VIII Vestibulocochlear
Point of decussation where most nerve fibers from the motor cortex cross over & continue the oppisite side of the body.
Medulla
This mediates many reflexes such as coughing, sneezing, & vomiting.
Medulla
The medulla is the most inferior portion of the brainstem. T/F
True
Medulla is the oint of origin for these 4 cranial nerves.
1. CN IX Glossopharyngeal
2. CN X Vagus
3. CN XI Spinal Accessory
4. CN XII Hypoglossal
Located posterior to the brainstem & inferior to cerebrum.
Cerebellum
The inferior & middle cerebellar peduncles receive.
Sensory Information
Transmits motor information to the thalamus and ultimately the cerebral cortex.
Superior Cerebellar Peduncle
Coordinates movements in terms of direction, force, speed, timing, & degree of displacement.
Cerebellum
The spinal cord is divided into 5 portions.
1. Cervical C1-C8 (neck)
2. Thoracic T1-T12 (chest)
3. Lumbar L1-L5 (lower back)
4. Saccral S1-S5 (pelvis)
5. Coccygeal Co1 (tail bone)
Back of head, neck, shoulders, diaphragm, arms, hands.
Cervical - C1-C8
Ribs, back, abdomen
Thoracic - T1-T12
Lower back, thighs, legs
Lumbar - L1-L5
Thighs, buttocks, legs, feet
Saccral - S1-S5 & Coccygeal - Co1
These horns receive sensory information.
Dorsal or Posterior
These horns project fibers to skeletal muscles.
Ventral or Anterior
SENSORY pathways in the spinal cord include.
1. Spinothalamic Tract
2. Spinocerebellar Tract
MOTOR pathways in the spinal cord include.
1. Lateral Corticospinal Tract (pyramidal tract)
2. Anterior Corticospinal Tract
3. Rubrospinal Tract
4. Lateral Vestibulospinal Tract
Region where posterior and anterior horns meet is called.
Intermediate Zone
Myelinated sensory & motor pathways bundled into large tracts are called.
Funiculi
Funiculi include.
1 Dorsal
1 Ventral
2 Lateral
All spinal nerves contain both________ & _________ fibers.
Sensory & Motor
Spinal nerves enter & exit the spinal cord through.
Intervertebral Foramina
There are 4 types of spinal nerves.
1. General Somatic Afferents (GSA)
2. General Visceral Afferents (GVA)
3. General Somatic Efferents (GSE)
4. General Visceral Efferents (GVE)
Sensory; Skin, Proprioceptors
GSA
Sensory; Digestive Tract, Respiratory System
GVA
Motor; Skeletal Muscles
GSE
Motor; Glands, Smooth Muscles, Heart
GVE
The 12 pairs of cranial nerves transmit information to & from the ______ & ______ regions.
Face & Neck
Special Somatic Afferent (SSA) nerves transmit information from the special senses including.
1. Hearing
2. Equilibrium
3. Vision
4. Taste
Special Visceral Efferent (SSE) nerves carry motor commands to the ________ muscles, which develop from the brachial arch.
Voluntary
Cranial nerves can also be classified as GSA, GVA, GSE, & GVE. T/F
True
Cranial nerves most important for speech & hearing include.
1. CN V Trigeminal
2. CN VII Facial
3. CN VIII Vestibulocochlear
4. CN IX Glossopharyngeal
5. CN X Vagus
6. CN XII Hypoglossal
CN V, the Trigeminal is made up of 3 branches.
1. Opthmalic
2. Maxillary
3. Mandibular
The GSA fibers of CN V: Trigeminal transmit information about.
Touch
Pressure
Pain
Proprioception
Temperature
The SVE fibers of CN V: Trigeminal innervate.
Muscles of Mastication
Tensor Veli Palatini
Tensor Tympani
Some Extrinsic Laryngeal Muscles
This is a complex nerve containing GSA, SVA, GVE, & SVE fibers.
CN VII: Facial
The SVE fibers of CN VII: Facial supply nerve impulses to.
Muscles of Facial Expressions
Stapedious Muscle
Various Extrinsic Laryngeal Muscles
The GSA fibers of CN VII: Facial transmits sensory information from.
External Ear
The SVA fibers of CN VII: Facial carries ________ information from the anterior 2/3 of the tongue.
Taste
The GVE fibers of CN VII: Facial transmit motor information to which glands?
Lacrimal (Tears) & Salivary
This nerve has 2 SSA branches (vestibular & cochlear).
CN VIII: Vestibulocochlear
The vestibular fibers arise from _________ ________, _________, & _________ in the inner ear.
Semicircular Canals
Utricle
Saccule
The vestibular fibers relay information to the CNS about.
Balance & Haed Position
The cochlear fibers arise from the inner hair cells in the cochlea & transmits ________ _________.
Auditory Information
CN VIII; Vestibulocochlear also has a small SVE component with motor information from the.