Biol2404Lecture:Ch13&14
Which can be used to characterize blood flow in the human body? A. There is a unidirectional blood flow. B. Arteries always carry oxygenated blood. C. Veins always carry deoxygenated blood. D. Arteries carry blood away from the heart. E. Veins carry blood toward the heart.
A. There is a unidirectional blood flow. D. Arteries carry blood away from the heart. E. Veins carry blood toward the heart.
Which carries the blood from the liver to the inferior vena cava?
Hepatic veins
What is the leading cause of stroke?
Hypertension
Mrs. Frances has experienced a CVA and cannot speak. Which side of her brain was affected? How do you know?
Left side. Left side of the brain deals with speech/language etc. while right is vision, etc.
Which of the cardiovascular system's circuits has deoxygenated blood in its arteries?
Pulmonary circuit
Pretend you are a blood cell that has just arrived in the right atrium. Trace the journey you will take to get to the aorta.
RBC passes through the tricuspid valve into the right ventricle, pumped through the pulmonary valve into the artery & lungs. Picks up oxygen, returns to heart through pulmonary vein, enters left atrium, passes through mitral valve, flows into left ventricle, left ventricle pumps RBC through the aortic valve
Which circuit of the cardiovascular system includes the left ventricle and aorta?
Systemic circuit
Explain the difference between arteries, veins, and capillaries.
Veins carry blood back to the heart. Arteries carry blood away from the heart to the capillaries. Connect arterioles with venules.
Atherosclerosis
a buildup of fat in the arterial walls can cause
bradycardia
a heart rate below 60
murmur
abnormal swishing sound caused by improper closure of the heart valves
arteriosclerosis
arterial walls are thickened due to loss of elasticity caused by aging
the pulmonary trunk receives blood from the right ventricle and conducts it toward the lung. The pulmonary trunk is a(n)
artery
vena cava
blood vessel that brings blood to the right atrium
pulmonary veins
bring oxygenated blood from lungs to left atrium
What is the sequence of events in the transmission of an impulse through the heart muscle? a. AV node b. AV bundle c. SA node d. through the atria e. through the ventricles f. bundle branches g. Purkinje fibers
c, d, a, b, f, g, e SA node, through the atria, AV node, AV bundle, bundle branches, Purkinje fibers, through the ventricles
Gas, nutrient, and waste exchange occur between the __________ and the tissues of the body.
capillaries
Valves in veins
cause venous blood flow to go in only one direction
The pulmonary trunk carries
deoxygenated blood from the right ventricle toward the lungs.
myocardial infarction
heart attack
Cardiac output equals the
heart rate x stroke volume
Systolic blood pressure is recorded
in arteries and is the maximal pressure that is recorded during ventricular contraction.
myocarditis
inflammation of the heart muscle
endocardium
innermost layer of the heart
arrhythmia
irregular heartbeat
heart disease
leading cause of death in the US
radial artery
most common cite for taking a pulse is the
The layer of the heart wall composed of cardiac muscle tissue is the
myocardium
The hepatic portal system allows for the processing of
nutrients and toxins absorbed from the gastrointestinal system into the blood
SA node (sinoatrial node)
pacemaker of the heart
valves
permit blood flow in one direction and prevent backflow of blood
The heart valves
permit the passage of blood in one direction
Tachycardia
rapid heart rate higher than 100 beats per minute
Which heart chambers contain deoxygenated blood?
right atrium and right ventricle
portal
special circulation that collects blood from the organs of digestion and takes it to the liver is the
aorta
takes blood away from the left ventricle to the rest of the body
pulmonary artery
takes blood away from the right ventricle to the lungs for oxygen
ECG or EKG
the device used to measure electrical activity of the heart
tunica intima
the inner layer of the artery
myocardium
the muscle layer of the heart
Pericardium
the outer layer of the heart
embolism
traveling blood clot
The ____ is composed of circularly arranged layers of smooth muscle cells
tunica media
Blood pressure is lowest in
veins
