FAMU BSC1005 DRLONG
Card Set Information
FAMU BSC1005 DRLONG
FAMU DRLONG CHP14PART2
-Transports gases and other substances throughout the body!
-Three main components
: Central pump(heart), Vascular system (blood vessel), Circulating fluid (blood)
The cardiovascular system has 3 types of blood vessels. List them and their functions.
Arteries, Capillaries, Veins.
A-carry blood away from the heart
C-permit exchange f materials with tissues
V-carry blood toward the heart
Arteries have three layers. Name them
Endothelium, Middle layer, Outerlayer.
What is the largest artery in the human body?
-is 25mm wide
-carries o2 rich blood from heart to other parts of the body.
-branch off into arterioles.
-Join arterioles to venules
-exchange of substances across thin walls
What are the 2 forces that control movement of fluid through a capillary wall?
Blood pressure (water from blood to tissues), osmotic pressure(water from tissues to blood).
-Veins and venules take blood from the capillary beds to the heart.
-Venules drain blood from capillaries and join them to form a vein
-Blood flow in veins is primarily dependent of skeletal muscle contraction.
-A connective tissue with a liquid matrix.
List some of the functions of blood.
Transport(nutrients, wastes, hormones), Regulation(body temperature, blood & osmotic pressures, pH), Protection(disease-causing pathogens, excess loss of blood by clotting mechanisms.
-Contains inorganic and organic substances dissolved or suspended in water.
Transport-albumin transports bilirubins, lipoproteins transports cholesterol
Fight disease- immounoglobulins
Red Blood Cells: Facts and Function
-Manufactured in red bone marrow of certain bones
-120 day lifespan (possibly due to lack of nucleus
-Destroyed in the liver and spleen
White Blood Cells : Facts
-Helps fight infection and provide immunity
-Divided based on structure into 2 groups
a.granular leukocytes (have visible ganules in cytoplasm)
White Blood Cells and Disease
-If the number of any type of white blood cell increases or decreases beyond normal, it may indicate presence of disease.
a. bacterials infections
: neutrophils elevated
b. Infectious mononucleosis
: B cells elevated
: T cells levels decreased
: abnormal white blood cells
Human Heart :