Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
Menings |
The most outer covering of the brain |
|
|
Arachnoid mater |
The middle layer covering of the brain |
|
|
Pia Mater |
The most inner layer of the brain covering |
|
|
Meninges |
Protective covering of the brain and spinal cord. |
|
|
Falx cerebri |
(Sickle shaped) separates the two hemispheres (sides) of the cerebrum left and right. |
|
|
Falx cerebelli |
Separates the two hemispheres of the cerebellum. |
|
|
Tentorium Cerebelli |
Separates the Cerebrum from the cerebellum |
|
|
Epidural Space |
Cushion of fat and connective tissue that protects the spinal cord. |
|
|
Subdural Space |
The thin space between the dura mater and the arachnoid mater which contain interstitial fluid. |
|
|
Subarachnoid Space |
Space between the arachnoid mater and Pia mater that surrounds the brain and spinal cord and through which cerebrospinal fluid circulates.
|
|
|
Filum Terminale |
Extension of pia mater that extends inferiorly, it fuses with arachnoid mater and the dura mater. It anchors the spinal cord with the coccyx. |
|
|
Cerebrospinal Fluid |
Clear, colorless liquid that protects the brain and spinal cord from chemical and physical injuries. carries a small amount of oxygen and glucose and other needed chemical from the blood to neurons and neuroglia. It runs through cavities in the brain and spinal cord, around the brain and spinal cord in the subarachnoid space. The total volume of CSF is 80 to 150 ml. 3 to 5 ounces in adults. Csf contains proteins, lactic acid, glucose, urea, Cations Na= sodium, K=potassium, CA2 ,and Magnesium= Mg. anions Cl= chlorine, HCO3; it also contains some white blood cells. Reabsorbed by the arachnoid villi granulation. |
|
|
Ventricles |
Four CSF filled cavities within the brain |
|
|
2 Lateral Ventricles |
1 in each Hemisphere of the brain |
|
|
Third Ventricle
|
Is the middle cavity of the brain that houses the Thalmus |
|
|
Fourth Ventricle
|
Lies Between the brainstem and the cerebellum.
|
|
|
Choroid Plexus |
Responsible for the production of CSF. Transfers metabolites from the nervous tissue back to the blood. |
|
|
Functions OF CSF> |
1. Mechanical protection 2.Homeostatic Function 3.Circulation |
|
|
Arachnoid Villi/Grannulations |
Reabsorbs CSF |
|
|
Spinal Cord |
The Part of the nervous system that extends from the brain. The spinal cord and its associated spinal nerves contain circuits that control some of your most rapid reactions to environmental changes |
|
|
Dorsal Nerve Root |
Contain only Sensory receptors in the skin, muscles and the internal organs into the central nervous system. |
|
|
Dorsal Root Ganglion |
Contains the cell body of the of sensory organs |
|
|
Ventral Root Ganglion |
Contains axons of motor neurons of motor neurons, which conduct nerve impulses from the CNS to effectors (Muscles and Glands). |
|
|
Endonerium |
A mesh material made of collagen fibers fibroblasts, and macrophages. Endonerium are wrapped around individual axons.
|
|
|
Perineurium |
Made of connective tissue it consists of up to 15 layers of fibroblasts. It wraps around a whole fascicle. |
|
|
Epineurium |
Surround an entire nerve. |
