Chapter 7 Flashcards
Palpitation
irregular heartbeat
Palpation
touching a vein
Homeostasis
steady state
Blood pressure
forces blood through vessels and pushes agains vessel walls like a balloon
Arteries carry blood
away from the heart
Arteries have a ______ oxygen level
high
Arteries’s walls are
thicker
Arteries branch into ______ then into ______
arterioles; capillaries
Arteriosclerosis
inner walls of vessels become rough because of cholesterol or calcium deposits that then cause blood clots
Veins carry blood
toward the heart
Veins work against
gravity
All veins except ______ only contain deoxygenated blood
pulmonary veins
Veins contain
deoxygenated blood
Veins have ______ walls.
thinner
Major Arm Veins - 1st Choice
Medial Cubital
Major Arm Veins - 2nd Choice
Cephalic
Major Arm Veins - 3rd Choice
Brachial
Capillaries link
arterioles and veins
Capillaries work as a
network
Capillary blood is a mix of
arterial and venous blood
Capillaries can only allow
one cell to pass through at one time
Artery blood
spurting blood, pulsating flow, bright red
Vein Blood
Steady, slow, dark red color
Capillary blood
slow even flow, shade of red between arteries and venous blood
Blood
transport system for nutrients, oxygen, chemical substances, waste removal; essential to homeostasis
Hypoxia
when any region of the body is deprieved of blood and oxygen leading to tissue death
Human body contains ______ of blood depending on size of the body
4 Liters
Whole blood is made of ______ of plasma
2.84 Liters
Whole blood is made up of ______ of cells
1.89 Liters
Erythrocytes
Red Blood Cells
Leukocytes
White Blood Cells
Hematopoietic Tissues
Blood forming tissue like bone marrow
Erythropoiesis
production of RBCs
Erythropoietin
hormone produced in kidneys that triggers erythropoiesis
Blood Types:
A, B, AB, O
Most common blood type
O
Blood type is determined
by presence of antigens and antibodies
Two Major Groups of Leukocytes
Granular and Angranular
Granular Types
Neutrophils, Eosinophils, Basophils
Angranular Types
Monocytes, Lymphocytes
Neutrophils
Granular WBC for immune defense
Eosinphils
Granular WBC for parasite defense
Basophils
Granular WBC for Inflammatory response
Monocytes
Angranular WBC for immune defense
Lymphocytes
Angranular WBC for antibody production; cellular immune response
Differential
morphological characteristics of RBCs and WBCs in a lab
Platelets
fragments of megakaryocytes that help with clotting
Plasma
Liquid portion of blood and lympth
anticoagulant
chemical agent used to prevent clotting
Buffy Coat
layer of WBCs and platelets that form above the RBCs when sample is centrifuged or allowed to settle
Osmotic Pressure
keeps blood volume levels in balance
Buffering
term used to describe body’s abilities to control pH of blood via proteins and electrolytes
Serum
liquid portion formed when blood specimen is allowed to clot
Serum ______ contain fibrinogen
does not
Plasma specimens ______ contain anticoagulant
do
Unclotted cellular components collect at the bottom in
Plasma specimens
Serum specimens ______ contain anticoagulant
do not
Cellular components form clot in the bottom with
Serum Specimens
Hemostasis
processes where platelets, plasma, and coagulation factors interact to control bleeding while maintaining circulating blood
Phases of Hemostasis
1) Vascular Phase
2) Platelet Phase
3) Coagulation Phase
4) Clot Retraction
5) Fibrinolysis
Vascular Phase
rapid reconstruction of vessel decreases blood flow to surrounding vascular bed
Platelet Phase
platelets degranulate, clump together, and adhere to injured vessel to from a plug
Coagulation Phase
coagulation factors are released to form fibrin mesh work/clot; seals off damaged portion of blood vessel
Clot Retraction
when bleeding stops the entire cloth retracts to heal torn edges
Fibrinolysis
final repair and regeneration of injured vessel occurs; clot begins to break up and dissolve
Coagulation phases
Intrinsic and Extrinsic
Intrinsic
contain in the blood
Extrinsic
Contained in endothelial cells that are stimulated when damage occurs
Lymphatic System consists
lymph, lymphocytes, lymph vessels, lymph nodes, tonsils, spleen, bone marrow, and thymus
Main functions of Lymphatic System
Maintain fluid balance in tissues via blood and lymph fluid
Provide defense against disease via lymphocytes
Distribute nutrients and hormones into the blood stream, remove waste, and absorb fats