Cardiovascular System Flashcards
List in order the Sequence of blood circulation
Arteries -> arterioles -> capillaries -> venules -> veins
Carry blood away from the heart
Arteries
Smallest arteries
Arterioles
Tiny blood vessels where nutrients and gases are exchanges; located between arterioles and venules
Capillaries
Smallest veins
Venules
Carry blood back to the heart
Veins
Carries blood to and from the lungs
Pulmonary circuit
Carries blood to the rest of the body
Systemic circuit
Heart wall consists of how many layers ?
3
Outer layer of the heart wall is called the
Epicardium
The middle layer of the heart wall is the
Myocardium
Inner layer of the heart wall
Endocardium
The right side of the heart collects blood and sends it to the lungs. This blood is ..
Deoxygenated
The left side of the heart collects blood from the lungs and sends it to the rest of the body. This blood is ..
Oxygenated
The heart has __ chambers
4
The upper 2 chambers of the heart are the
Atria
The 2 lower chambers are the
Ventricles
The right and left chambers are separated by a wall called the
Septum
Contraction
Systole
Relaxation
Diastole
Vena cavas deposit ..
Deoxygenated blood into the right atrium
Right and left pulmonary veins
Carry oxygenated blood back to the heart from the lungs
Pulmonary veins deposit
Oxygenated blood into the left atrium
The largest Artery of the body
Aorta
Prevents backflow
Valves
What are the 4 major valves in the heart?
Tricuspid, bicuspid/mitral, pulmonary, aortic
Smaller branches from the coronary artery forming a web of interconnections are know as ___ that supply the heart with blood
Anastomoses
Cardiac muscle is ___ (not controlled by nerve impulses or hormones)
Autorhythmic
Specialized cells are called
Nodes
Pacemaker of heart
SA node
Back up; fires after SA node and at a slower rate
AV node
Normal adult heart rate
60-100 bpm
Heart rate under 60 bpm
Bradycardia
Heart rate above 100 bpm
Tachycardia
Normal adult blood pressure
120/80
140/90 or higher is
Hypertension
100/60 or lower
Hypotension
1st sound heard when taking bloop pressure is
Systolic
Last sound heard when taking blood pressure
Diastolic
3 subdivisions of the aorta
Ascending aorta, aortic arch, descending aorta
The left and right coronary arteries supply
Heart muscle
Left gastric artery supplies the
Stomach
Splenic artery supplies the
Spleen
Hepatic artery supplies the
Liver
The mesenteic artery supplies the
Intestine
Phrenic arteries - ?
Diaphragm
Renal arteries - ?
Kidneys
The thigh contains the __ artery
Femoral
Behind the knee is the __ artery
Popliteal
The lower leg breaks into the __ artery and the __ artery
Tibial and dorsalis pedis