ventricle. The Right Ventricle Pumps blood into the pulmonary artery to the lungs for oxygenation‚ the low pressure pulmonary pump. Walls of the LV are much thicker than RA‚ has a number of internal projecting ridges‚ giving the ventricular wall a sponge like appearance know as TRABECULAE CARNEAE. TRISCUSPID VALVE GUARDS THE AV orifice. The Left Atrium Receives oxygenated blood from the lungs (from the pulmonary veins) during systole‚ blood is sent into left ventricle Consist of four
Premium Heart Respiratory system Blood
_______________________3/20/2012 32 Print Form Anatomy of Blood Vessels Microscopic Structure of the Blood Vessels 1. Cross-sectional views of an artery and of a vein are shown here. Identify each; and on the lines to the sides‚ note the structural details that enabled you to make these identifications: Artery (vessel type) vein (vessel type) thick (a) shape (a) round (b) thin (b) Now describe each tunic more fully by selecting its characteristics from the key
Premium Artery Vein Heart
Esophagus Rectum Anus Vagina Stratified squamous keratinized Surfaces requiring protection from abrasion‚ pathogens and chemical attack Protects against dehydration Skin – acts as barrier to evaporation Transitional Surfaces which must allow stretch and recoil Round and puffy cells on top when relaxed‚ flattened cells when stretched Urinary bladder Ureter Connective Tissue and Cartilage Structure and Function Found in: Areolar CT Least specialized – all cell and fibre types Provides support
Premium Epithelium Collagen Connective tissue
HS130 MIDTERM REVIEW UNITS 1-4 Chapter 11 Blood Chapter 12 The Circulatory System Chapter 12 The Lymphatic System and Immunity Chapter 14 The Respiratory System Daudi K. Langat‚ PhD January 2011 Chapter 11 Blood BLOOD COMPOSITION Blood plasma • Definition—blood minus its cells • Composition—water containing many dissolved substances (e.g.‚ foods‚ salts‚ and hormones) • Amount of blood—varies with size and sex; 4 to 6 L about average;
Premium Blood Hematology Red blood cell
Capillaries exchange fluids‚ gasses‚ heat‚ nutrients and wastes to the tissues through diffusion. Capillary walls contain small pores that are selectively permeable allowing only certain molecules to pass in and out. This exchange is controlled by blood pressure through hydrostatic pressure and osmotic pressure. Osmotic pressure is produced by high levels and salts and proteins in the blood. As blood enters the capillary by the arteriole end the blood pressure is higher than the osmotic pressure
Premium Blood Oxygen Blood vessel
length of blood vessels is twice the circumference of the equator Arteries carry blood away‚ they branch into arterioles Arterioles are small vessels that convey blood to the capillaries. Capillaries are microscopic vessels with very thin‚ porous walls. Networks of capillaries are called capillary beds Sites of diffusion They converge into venules at the downstream end‚ and venules converge into veins Portal veins are the only veins that carry blood between capillary beds Heart: Atria - chambers
Premium Blood Heart
atria and two ventricles it also has two pairs of valves (atrioventricular valves and the semilunar valves). The arteries‚ arterioles‚ veins and venules have the same tissue layout but different thickness of the tissues is different. It also contains nervous tissue which is under the control of autonomic nervous system controlling whether the heart beat speeds up or slows down. In arteries there is a thicker smooth muscle layer to resist bursting. The blood is made up of plasma a fluid matrix and different
Premium Heart Blood
Laszlo Vass‚ Ed.D. Version 42-0008-01-01 Purpose Please explain the purpose of this lab. Include in your explanation the major concepts you learned and any safety concerns associated with the lab. Purpose is to understand how the veins and arteries run through the body and how they function while the heart beats‚ where they deliver and drain blood to/from and how the cardiovascular system works together. Lock up the dogs while dissecting. wear face mask to protect from smells and splatter
Premium Artery Vein Heart
collects carbon dioxide and enters through the vena cava into the right atrium of the heart. The right ventricle then pumps blood through the pulmonary artery into the lungs. In the lungs‚ tiny blood vessels called capillaries absorb carbon dioxide from the blood and replace it with oxygen. Our oxygenated blood then flows through the pulmonary vein and into the left atrium. Oxygenated blood then pumps through the mitral valve and into the left ventricle. The left side of our heart contracts the
Premium Heart Blood
Circulatory systems Closed circulatory systems: • Blood leaves heart under pressure to arteries then arterioles then capillaries. • Capillaries come in large numbers. They exchange substances between the blood and cells. • After passing through capillaries‚ blood goes back to the heart via veins. • Valves in the veins ensure that blood only flows in one direction. Single circulatory system: • Heart pumps deoxygenated blood. • Gaseous exchange (diffusion of CO2 from blood to H2O and diffusion
Premium DNA Blood Protein