Lab: APR Nervous System Flashcards
What is the core of the spinal cord
Grey matter of spinal cord
- composed of nervous tissue shaped like the letter H
Grey matter of spinal cord composed of nervous tissue shaped like the letter __
H
Ventral horns of the grey matter are associated with ___ neurons
Motor
Dorsal horns of the grey matter are associated with ___ neurons
Sensory
_____ is the outer layer of the spinal cord
White matter of spinal cord
White matter of spinal cord is composed of ____ axons
Myelinated
Orientation of gray and white matter in the spinal cord is _____ of the orientation of gray and white matter in the brain
Opposite
Function: Dorsal rootlet
Conduct afferent (sensory) impulse
Function: Ventral rootlets
Conduct efferent (motor) impulse
What does the dura mater surround
Brain and spinal cord
Dura mater is tough, dense irregular ____ tissue
Connective
What are the 3 layers of meninges?
- Dura mater - external
- Arachnoid
- Pia mater - internal
Function: Dura mater
Protection of brain and spinal cord
Central sulcus is a groove on the ____ surface on each cerebral hemisphere
Lateral
Central sulcus forms a boundary between the ___ and the ___ lobe
Frontal; Parietal
Precentral gyrus a distinct fold at the _____ border of the frontal lobe
Posterior
Precentral gyrus location
Anterior edge of the central sulcus
Function: Precentral gyrus
Controls voluntary movement
Postcentral gyrus distinct fold at the _____ border of the parietal lobe
Anterior
Postcentral gyrus location
Posterior edge of the central sulcus
Function: Postcentral gyrus
Receives somatosensory information from body
Frontal lobe location
Anterior portion of the cerebral hemisphere
Function: Frontal Lobe
- Controls voluntary motor activity
- Involved in higher mental processing, emotional behavior, and speech output
- Broca’s Area
Parietal lobe location
Lateral surface of the cerebral hemisphere
Function: Parietal lob
Receives general sensory information from the body
- Involved in language and tactile object recognition
Temporal lobe location
Lateral and inferior portion of each cerebral hemisphere
Function: Temporal lobe
Primary hearing and smelling areas
- Memory, speech perception and recognition
Occipital lobe location
Posterior portion of each cerebral hemisphere
Function: Occipital lobe
Primary visual area
Cerebellum location
Dorsal/posterior to brainstem
Function: Cerebellum
Coordinates complex movements and monitors muscles to ensure fluid movements
Corpus callosum is a large, myelinated fiber tract connecting _____
Left and right hemisphere
Thalamus location
Diencephalon
Function: Thalamus
Primarily for relay of sensory information to the cortex
- Relays information for movement planning
Function: Hypothalamus
- Master control center for the endocrine system
- Controls the autonomic nervous system
- Regulates emotional behavior
- Maintains the sleep/wake cycle
- Similar to the pituitary gland
Location: Hypothalamus
Ventral diencephalon
Function: Pineal gland
Secretes melatonin
Location: Pineal gland
Diencephalon
Hormones secreted by the anterior pituitary gland
- Thyroid-stimulating (TSH)
- Prolactin (PRL)
- Adrenocorticotropic (ACTH)
- Growth (GH)
- Luteinizing (LH)
- Melanocyte-stimulating (MSH)
- Follicle-stimulating (FSH)
Location: Pituitary gland
Rests in the sella turcica of the sphenoid bone
Function: Midbrain
- Coordinates movement in response to visual and auditory stimuli
- Conveys motor information from the cerebral cortex to the pons
- Conveys sensory information from the spinal cord to the thalamus
Location: Midbrain
Brainstem
- Between diencephalon and pons
Function: Pons
- Involves in control of sleep and respiration
2. Transfers of information to and between cerebellar hemisphere
Location: Pons
Ventral aspect of the brainstem
Function: Medulla Oblongata
Contains the respiratory, cardiac, and vasomotor centers
Location: Medulla Oblongata
Most caudal/inferior portion of the brain