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106 Cards in this Set
- Front
- Back
Somatic Motor Nuron |
Skeletal Muscle; voluntary |
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Atonomic |
Smooth/Cardiac; involuntary |
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Astrocyte |
CNS; located between neuron and body substances; blood brain barrier; resource distribution |
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Oligodendrocytes |
CNS; creates myelin around neurons; can contain multiple axons; greatly increases nerve impulses |
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Ependymal Cells |
CNS; lines access to cerebrum; is a primary component in the blood/brain barrier |
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Microglia |
CNS; similar to macrophages; recycles material; immune component |
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Schwann Cells |
PNS; creates myelin around neurons; greatly increases nerve impulses |
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Myelin Sheath |
Structure that covers axons of neurons; speeds up impulse speed; created by ogliodendrocytes and schwann cells |
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Myelin |
Substance that surrounds axons; created by ogliodendrocytes and schwann cells |
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Nodes of Ranvier |
Spaces between myelin sheath segments |
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White matter |
Myelinated axons present; surface of brain |
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Grey matter |
Non-myelinated axons present; interior of brain |
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Cerebrum |
Brain |
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Longitudinal fissure |
Separates right and left hemispheres; only to corpus collosum |
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Lateral ventricle |
Largest part of the CSF fluid circulation lumen; two ventricles |
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Corpus collosum |
Superior portion of the diencephalon |
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Cerebral Cortex |
Exterior of brain |
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Convolutions |
The undulating exterior of the brain surface |
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Gyrus |
Lowest point in a convolution |
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Sulcus |
Highest point in a convolution |
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Frontal lobe |
Anterior portion of the brain; sense of smell |
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Central Sulcus |
Superior portion of cerebrum; on parietal lobe; seperates front and back parts of cerebrum |
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Parietal lobe |
Under associated bone; sensory information
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Temporal lobe |
Under associated bone; auditory information |
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Occipital |
Located under associated bone; visual information |
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Diencephalon |
Superior to midbrain; encompasses thalamus, hypothalamus, epithalamus and pineal body |
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Pineal Gland |
Creates various hormones; posterior diencephalon |
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Pituitary gland |
Creates various hormones; inferior to hypothalamus |
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Brain stem |
Deep; encompasses midbrain, pons and medulla oblongata; superior to spinal column |
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Midbrain |
Superior portion of brain stem |
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Cerebral aqueduct |
CSF duct between 3rd and 4th ventricle |
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Pons |
Mid portion of brain stem |
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Medulla oblongata |
Inferior portion of brain stem |
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Cerebellum |
"little brain"; inferior/dorsal structure of brain; motor coordination |
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Meninges |
Structure that covers the brain and spinal cord; three layers |
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Dura mater |
"Tough mother"; protective layer; durable; outer layer |
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Arachnoid mater |
"Spider mother"; middle layer; delicate web like structures |
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Subarachnoid space |
Filled with CSF; between arachnoid mater and pia mater |
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Pia mater |
"Delicate mother"; inner layer; non-durable |
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Choroid plexus |
CSF production; component of blood plasma from capillary filtration; circulated |
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3rd ventricle |
Inside structure of the diencephalon; middle of brain; superior to cerebral aqueduct |
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4th ventricle |
Lowest ventricle; inferior to cerebral aqueduct; inside posterior portion of pons |
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Cerebral aqueduct |
Duct between 3rd and 4th ventricles |
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Central canal |
Duct that allows CSF to flow through spinal cord |
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Arachnoid villi/granulation |
Location in which CSF is circulated out of cerebral interior |
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Dural sinuses |
Vein that allows for CSF return to blood stream |
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Conus medullaris |
Tapered end of the spinal cord |
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Filum terminale |
Strand/fiber of pia mater that continues inferior to the conus medullaris |
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Cauda equina |
"Horse tail"; CNS neurons that continue beyond the conus midullaris |
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Lumbar puncture/Spinal tap |
Centesis of the of the spine |
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CN-1 |
Olfactory; sensory; nose |
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CN-2 |
Optic; sensory; eye |
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CN-3 |
Oculomotor; motor; eye muscles (Not CN-4/6) |
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CN-4 |
Trochlear; motor; superior oblique |
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CN-5 |
Trigeminal; mixed; face, teeth, sinuses, etc.; muscles of mastication |
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CN-6 |
Abducens; motor; lateral rectus |
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CN-7 |
Facial; mixed; facial muscles |
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CN-8 |
Vestibulocochlear; sensory; ear |
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CN-9 |
Glossopharyngeal; mixed; pharynx muscles; posterior toung |
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CN-10 |
Vagus; mixed; heart; lungs; gastrointestinal |
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CN-11 |
Accessory; motor; sternocleidomastoid/trapezius |
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CN-12 |
Hypoglossal; motor; toung |
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Aponeurosis |
Attachment point; wide fibers |
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Synergist |
Cooperation of another muscle |
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Antagonist |
Works against another muscle |
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Flexion |
Bends; anterior |
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Extension |
Straightens; posterior |
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Abduction |
Move away from body |
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Adduction |
Move toward the body |
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(A) |
Lacramal Gland |
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(B) |
Superior lacrimal punctum |
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(C) |
Superior lacrimal canal |
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(D) |
Lacrimal sac |
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(E) |
Inferior lacrimal punctum |
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(F) |
inferior lacrimal canal |
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(G) |
Nasolacrimal duct |
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Conjunctiva |
The mucous membrane that covers the front of the eye and lines the inside of the eyelids.
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Levator palpebrae superioris |
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Subscapularis |
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Gluteus maximus |
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Gluteus medius |
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Gluteus minimus |
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General senses |
Touch, pain, temperature and pressure |
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Special senses |
Smell, taste, sight, hearing and equilibrium |
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Palpebrae |
Eyelids |
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Sclera |
Fibrous and protective; outer layer (eye) |
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Choroid |
Vascular; middle layer (eye); absorbs excess light |
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Retina |
Sensory; inner layer (eye); contains photorecieptors |
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Cornea |
Clear; "window of the eye" |
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Ciliary muscle |
Adjusts lens; attached to suspensory ligaments |
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Iris |
Colored part of eye |
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Pupil |
Black center of eye |
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Rods |
Black/white reciptors; general vision |
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Cones |
Color receptors; detailed vision |
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Macula |
General area where photoreceptors are most prevalent |
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Fovea centralis |
Specific location where photoreceptors are the most numerous |
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Optic disk |
No rods/cones; "blind spot"; entry for optic nerve and various blood vessels |
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Aqueous humor |
Anterior eye; derived from plasma; liquid |
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Scleral sinus |
Location where aqueous humor returns to blood stream as plasma |
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Vitreous humor |
Posterior eye; clear gel; maintains eye shape |
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Vestibule (ear) |
Sense of balance |
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Cochlea |
Sense of hearing |
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Oval window |
Connects to stapes via membrane |
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Malleus |
Attaches to tympanic membrane; "hammer" |
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Incus |
Between malleus and stapes; "anvil" |
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Stapes |
connects to oval window; "sturrup" |