JessicaNyquistCardiovascularSystem

Blood Vessels

Blood

Heart

Pericardial Membranes

Heart Valves

Myocardium Anatomy

Conduction System

Heart Wall

Arteries

Veins

Capillaries

Plasma

Cells

Erythrocytes

Leukocytes

Platelets (thrombocytes)

liquid portion of blood

90% water, 10% components

Arterioles

Venules

Fenustrated

Sinusoid

Continuous

Elastic / Conducting

Muscular / Distributing

Oxygen transport

Created in red bone marrow

Pieces of megakaryocytes

Agranulocytes

Granulocytes

Neutrophil

Eosinphil

Basophil

Lymphocytes

Monocyte

"Pinched" shape increases surface area

Lose nucleus & some organelles

gap junctions

fascia adherens

Serous Pericardium

Fibrous Pericardium

Visceral Pericardium / epicardium

Parietal Pericardium

Myocardium

Endocardium

Epicardium

Outer membrane, "Upon Heart"

Inner membrane, covers valves

Cardiac muscle

t-tubules

sarcoplastmic reticulum

intercalated discs

located between myofibrils

desmosome-like structures

where electrical signals are passed from cell to cell

dense irregular C.T.

runs from diaphragm to roots of large vessels

keeps heart in place

Pericardial Cavity

space between layers of serous pericardium, filled with serous fluid

Sinoatrial Node (SA)

Atrioventricular Node (AV)

uses gap junctions to cause atria to contract

generates electrical signal

the "pacemaker"

delays signal while ventricles fill with blood

tracing nerve impulses

AV node

bundle of His

Bundle branches

Purkinje fibers

Left Atrioventricular Valve / Tricuspid

Aortic Semilunar Valve

Pulmonary Semilunar Valve

RIght Atrioventricular Valve / Bicuspid / Mitral

moves blood from left atrium to left ventricle

moves blood from right atrium to right ventricle

moves blood from left ventricle to the ascending aorta

moves blood from right ventricle to the pulmonary trunk

3 cusps

3 cusps

chordae tendineae

chordae tendineae

second heart sound

second heart sound

first heart sound

first heart sound

Locations

Most common

Least Leaky

Lungs

Smooth Muscle

Skin

Skeletal Muscle

Has pores

More leaky than continuous

High rates of exchange

have the most elastic fibers

recoil of elastic fibers propels blood forward

move large amounts of blood

examples: aorta, large aortic branches

Smallest

1-2 layers of smooth muscle

can change diameter to regulate blood flow

takes blood to organs / parts of organs

changes diameter to regulate blood flow

more muscle than other arteries their size

CNS

Locations

endocrine glands

choroid plexus

small intestines

kidneys

Most leaky

large pores/clefts/sinusoids

large and winding

can exchange whole cells and proteins

exchange vessels

have endothelium

absent in cornea, lens & cartilage

Locations

Liver

Red bone marrow

Spleen

Smallest veins

much like capillaries

1-2 layers of smooth muscle

me exchange of materials

have valves

fewer elastic fibers than arteries

Proteins

Globulin

Fibrinogen

Albumin

helps keep water in vessels

helps in the transport of hydrophobic materials; antibodies

involved in blood clotting

components

ions

sugar

hormones

vitamins

lipids

amino acids

nutrients