5 - Circulation Grays

5 - Circulation Grays - Circulation Cardiovascular System =...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Circulation Cardiovascular System = Heart, Blood and Vessels Lymphatic System = Lymph nodes, Organs and Vessels
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Lymphatic Vessels The Lymphatic Vessels Function: to collect excess tissue fluid collecting at arteriole end of capillary beds, and return leaked blood proteins to blood (maintain osmotic pressure needed to take up water into bloodstream) Lymph is moved through vessels Pulse of nearby arteries Contraction of surrounding skeletal muscle Regular movement of body (wiggling legs) Muscle in Tunica Media
Background image of page 2
Lymphatic System…The Players: Lymphatic System…The Players: Lymph- clear fluid from loose CT at capillaries Contains small molecules of blood plasma, water, various ions, nutrient molecules, respiratory gases Lymphatic capillaries (near blood capillaries) Lymph collecting vessels (small, 3 tunicas, # valves) Lymph nodes (sit along collecting vessels)-clean lymph of pathogens, they are NOT glands Lymphatic trunks (convergence large collecting vessels) Lymphatic ducts empty into veins of neck
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Lymphatic Ducts T horacic Duct Receives lymph from large trunks in abdomen and thorax Receives lymph from ducts of thoracic lymph nodes Along vertebral bodies Contain valves to ensure 1-way flow of lymph to lymph nodes Drains into left Brachiocephalic Vein (or subclavian or int. jugular veins) pg 154
Background image of page 4
Functions of Heart and Cardiovascular System Cardiovascular System Bulk flow of blood Exchange with tissue Heart Right side receives oxygen-poor blood from body tissues and pumps the blood to the lungs Left side receives the oxygenated blood from the lungs and pumps the blood throughout the body
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Location of Heart in Chest Oblique Position Apex = Left of Midline (5th ICS), Anterior to rest of heart Base (posterior surface) sits on vertebral column Superior Right = 3rd Costal Cartilage, 1” right midsternum Superior Left = 2nd Costal Cartilage, 1” left midsternum Inferior Right = 6th Costal Cartilage, 1” right midsternum Pg 178
Background image of page 6
Cardiac Conduction Intrinsic system initiating and coordinating contraction of heart muscle Sinoatrial node (where SVC enters RA) Atrioventricular node (in atrioventricular septum) AV Bundle (in IV septum then splits) Purkinje fibers (throughout LV) Cardiac Plexus (external innervation) Vagus (parasympathetic) pg 201
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Blood Flow to Supply the Heart Muscle Heart wall too thick for diffusion of nutrients Rt and Lft Coronary Arteries Branch from Ascending Aorta Have multiple branches along heart Sit in Coronary Sulcus Coronary Heart Disease Cardiac Veins Coronary Sinus (largest) Many branches feed into sinus Sits in Coronary Sulcus pg 193
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 33

5 - Circulation Grays - Circulation Cardiovascular System =...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online