Circulatory System

1. Returns blood from the peripheral structures such as organs and tissues in the body to the heart.
2. The meninges outermost membrane layer. The middle is arachnoid mater and inner membrane is pia mater.
4. Makes up 2% of body weight & consumes 20% of oxygen from blood.
9. Clear, colorless fluid that the brain and spinal cord are suspended in and serves as a cushion of the Central Nervous System and bones.
11. Takes blood from heart to peripheral structures such as organs and tissues in the body.
12. Hardening of the arterial walls.
13. Insufficient blood supply.
14. Responsible for distribution of blood supply to the brain and joins the Vertebral and Carotid Artery Systems.
15. Turflike structure located in a ventricle that is primarily concerned with production of cerebrospinal fluid.
16. Arteries that affect facial muscles, forehead, oral, nasal, and orbital cavities.
18. Layers of tissue that cover the brain and spinal cord.
19. Third leading cause of death - Preceded by Heart Disease and Cancer.

1. Has three parts: lateral ventricles, third ventricle, and fourth ventricle.
3. Localized build up of fatty substances and blood platelets.
5. Local dilation or ballooning of the artery.
6. Passes through the foramina in the upper six cervical vertebrae and enters the skull through the foramen magnum.
7. Extravascular bleeding or blood vessel rupture.
8. System of arteries that deliver oxygenated blood and glucose to the brain and removes waste and byproducts through the veins.
10. Arteries that affect major supply to the brain, interfaces with Circle of Willis and then forms anterior cerebral artery.
17. Percutaneous Transluminal Coronary Angioplasty (PTCA) is the process used to widen the narrowing in an artery without surgery.