Nervous System Flashcards
T or F an axon of a motor neuron would transmit an impulse to a muscle
T
CVA
Cerebrovascular accident
Cochlea (ear) is a motor neuron
F
T or F Spinal cord extends to the third thoracic vertebrae
F
Encephal
Brain
Plegia
Paralysis
Neuro
Nerve
Mening
Meninges
Myel
Spinal cord
Olig
Few
The eye is considered part of what system ?
PNS
What is the chemical name for adrenaline?
Epinephrine
The nervous system is integrated with the _____ system
Endocrine
What is the scientific name for a nerve cell?
Neuron
What part of the diencephalon controls the pituitary gland ?
Hypothalamus
What is the largest part of the brain?
Cerebrum
A bundle of nerve fibers located within the CNS are called a ?
Tract
What is a branch of the spinal nerve that is attached to the spinal cord called?
Root
What is the most highly evolved portion of the brain?
Cerebral cortex
What produces CSF?
Choroid plexus
What is a network of nerve branches called?
Plexus
The outermost membrane of the myelin sheath is the ?
Neurilemma
What is myelophthisis?
Atrophy of the spinal cord
What part of the NS controls skeletal muscle?
Somatic
Brain and spinal cord
CNS
Cranial and spinal nerves
PNS
The PNS consists of __ pairs of cranial nerves and __ pairs of spinal nerves
12 cranial and 31 spinal
This system initiates voluntary responses
Somatic
The autonomic system regulates involuntary functions to maintain ?
Homeostasis
This system initiates involuntary responses
Autonomic
The PNS is broken down into what?
The somatic NS and the autonomic NS
The autonomic NS is broken down into
Sympathetic and parasympathetic
System that prepares the body to deal with emergencies
Sympathetic
Coordinates activity of entire NS
Central nervous system
What makes up the myelin sheath in the CNS
Neuroglia
What system restores homeostatic balance?
Parasympathetic
Space between two neurons is known as a
Synapse
What is located at the end of each axon allowing nerve impulses to pass from one neuron to another
Neurotransmitter
In the PNS myelin sheath is produced by
Schwann cells
In the CNS melon sheath is produced by
Neuroglia
Tiny gaps in completed sheaths called ____ speed conduction
Nodes
Sensory neurons are also known as
Afferent
Motor neurons are also known as
Efferent
Interneurons are found only in the
CNS
Chemical released at a synapse
Acetylcholine
What is a reflex arc ?
A complete pathway through the NS
A muscle or gland which responds to a motor neuron is an
Effector
Hard outermost protective layer
Dura mater
Weblike middle layer
Arachnoid
Soft innermost layer that carried blood supply to the brain
Pia mater
An elevation on the surface of the brain
Gyrus
A deep groove
Fissure
A shallow groove
Sulcus
Lobe that controls voluntary muscles, motor area, speech and writing
Frontal
Lobe that controls sensory functions: pain, touch, temp and estimation of: distance, size, shape
Parietal
Lobe that controls hearing, smell, taste, and language input
Temporal
Controls vision, involved in communication, and ability to read with understanding
Occipital
Responsible for conscious mental processes
Cerebrum
Maintaining balance, equilibrium and coordination
Cerebellum
Part of the brain that connects with the spinal cord
Medulla oblongata
Part of forebrain that includes thalamus and hypothalamus
Diencephalon
Serves as the relay center; integration of sensory info
Thalamus
Maintains homeostasis
Hypothalamus
White fatty tissue covering a nerve fiber that acts as an electrical insulator
Myelin
An involuntary response to a stimulus
Reflex
Serves to relay impulses Between the cerebrum & cerebellum and cerebrum & medulla oblongata
Pons
A group of nerve cell bodies located outside the CNS
Ganglion
CSF
Cerebrospinal fluid
AD
Alzheimer’s disease
CP
Cerebral palsy
MS
Multiple sclerosis
Progressive deterioration of a persons intellectual functioning
Alzheimer’s disease
At birth brain damage that is permanent but not progressive, characterized by the child’s lack of control of voluntary muscles
Cerebral palsy
Death of brain tissue; also called a stroke
Cerebrovascular accident
Degenerative inflammatory disease of the CNS attacking the myelin sheath of the brain and spinal cord
Multiple sclerosis