Cardiovascular System
- Created by: Jenp15
- Created on: 27-01-23 12:26
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Clues
- *'Erythrocytes' *Flatterned biconcave discs *Made in the bone marrow *Each RBC contains ~ 270 million haemoglobin molecules *Circulates the body in 20s (3, 5, 5, 3)
- *An outer covering *Double walled sac *Superficial layer = Fibrous Pericardium *Deep layer = Serous Pericardium (11)
- *Blood in the circulatory system is always under pressure, which depends on: -The amount of blood in the system -The strength and rate of the hearts contractions -The elasticity of the arteries *Doctors measure two phases of the blood pressure: -Systo (5, 8)
- *Fibrous *Strong *Anchors heart to surrounding structures *Protects and prevents overfilling (Made of connective tissue. Tissue that connects, supports, binds, or separate other tissues or organs.) (7, 11)
- *Thick walled and strong *Recieves blood from atria, as it passes through the Tricuspid (Right) & Bicuspid (Left) (Mitral) Valve. *Pushes blood to: -The pulmonary Circulation (Lungs- Right side) -The Systemic Circulation (Body - Left side) *The blood pas (10)
- 1. Arteries: Carry blood away from the heart -They have thick muscular walls to withstand and maintain the pressures generated by the heart. 2. Veins: Carry blood back to the heart -Veins do not need muscular walls, but instead have valves to prevent th (5, 7)
- ATRIA (Right & Left Atrium) *Receiving chambers *Thin walled and small *Right side receives deoxygenated blood from Inferior Vena Cava, Superior Vena Cava, Cardiac Veins & Coronary Sinus *Left side receives oxygenated blood from 4 pulmonary veins (8, 2, 3, 5)
- Has 2 layers: *Parietal Layer - lines internal surface of fibrous pericardium *Visceral Layer - Lies deep to parietal Layer *Pericardial Cavity between these two layers, contains fluid. (6, 11)
- it is an important region of the body located between the lungs. Structures that lie in this region include the heart, the oesophagus, the trachea, and large blood vessels including the area. The mediastinum is also home to lymph nodes. (11)
- Refers to cells that line the interior surface of blood vessels and lymphatic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessels wall. It is a thin layer of simple, or single-layered, squamous cells c (11)
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