Circulatory System Flashcards
One of layers found in arteries, constrict and dilate to modify blood pressure
Smooth muscle
Larger blood vessels , carry blood back to heart
Veins
Main part of the heart , composed of mainly muscle
Myocardium
The chamber of the heart which receives blood from the rest of the body
Right atrium
Smaller vessels that carry blood away from heart
Arterioles
The __________ receives blood returning from the lungs
Left atrium
Large vessels that carry blood away from heart
Arteries
Oxygenated blood is found on
Left side of heart
Contractions that help push blood through the veins and back to heart :
Skeletal muscle contractions
The _____ node receives signal from SA node
Av
The heart can beat on its own without help from brain, therefore it is
Intrinsic
Relaxation of the heart muscle . Lowest arterial BP
Diastole
Largest artery in the body
Aorta
Membrane that surrounds the heart
Pericardium
Smaller blood vessels that carry blood back to heart
Venules
Pulmonary arteries carry blood to the
Lungs
The hepatic _____ vein takes blood from small int. Into liver
Portal
The ______ vena cava returns blood to the heart from lower body
Inferior
Percentage of blood in ur arteries at any one time
20
Most muscular of the heart chambers of the Heart
Left ventricle
The ______ arteries and venoms take blood to and from kidneys
Renal
The right ______ valve separates right atrium and ventricle
Atrioventricular
________ circulation occurs on left side of heart
Systemic
Veins returning blood from the head
Jugular
The pulmonary _______ valve prevents back flow of blood as the right ventricle contracts to pump blood to lungs
Semilunar
________ pressure is created by presence of salts and plasma proteins in blood
Osmotic
This artery takes blood from the heart to the small int
Mesentric or mesentary
This node is known as the pace maker
SA
Expansion of blood pressure during systole
Pulse
Substances tend to move into the cells on the ______ of the capillaries
Arterial
How many layers of tissue in arteries , which are they?
3
1. Smooth muscle - gives strength and allows vessels to constrict and dialate
2. Elastic fibres (elastin) helps stretch and contract
3. Supporting tissue
Device used for measuring bp
Sphygmomanometer
When is BP lowest
In the venules and veins
The type of muscle the heart is made out of
Cardiac
Which arteries carry blood to the head
Carotid
Substances tend to move out of the cells and into blood on the this side of capillary bed
Venous
Structures in veins that help move blood up and prevent back flow
Valves
Tiny blood vessels which deliver nutrients to cells
Capillaries
Max contraction of the ventricles , highest bp
Systole
Another name for left atrio ventricular valve
Bicupsid
These arteries take blood to the heart
Coronary
Th heart rate is affected by
Stress. O2levels excercise and bp
Aoerta divides into the ______ arteries in h th he pelvic region
Iliac
Layer found in the arteries which allows them to stretch
Elastic fibre layer, elastin
