The Heart
List the four chambers of the heart.
Right atrium; right ventricle; left atrium; left ventricle
T or F
Capillaries are the largest blood vessels, since they have walls one cell layer thick.
False
Normal resting heart rate for an adult ranges from ____ to ____ beats per minute
60-100 bpm
Blood returns from the lungs through the __________.
Pulmonary veins
Select all of the following which are components of the heart’s conduction system.
A. Aorta
B. AV node
C. Pulmonary arteries
D. Purkinje fibers
E. SA node
B. AV node
D. Purkinje fibers
E. SA node
Which structure is responsible for receiving blood from the veins which lead to the heart?
Right and Left Atrium
Veins usually carry ________ blood toward the heart to remove waste from body tissues.
deoxygenated
Which of the following is considered hypotension for systolic blood pressure?
A. 121-139 mmHg
B. 90-120 mmHg
C. <90 mmHg
D. <100 mmHg
C. <90 mmHg
________ circulation is responsible for oxygenating tissues and providing nutrients to all parts of the body.
Systemic
During exercise, cardiac out _________.
increases
Cardiac muscle responsible for heart contractions
Myocardium
The _______ and _________ are the largest veins in the body.
Superior and Inferior vena cava
______ _______ is the force excreted by blood on the walls of arteries as it pumps through the body.
Blood Pressure
From tissue capillaries, deoxygenated blood travels back to the heart to be sent to the lungs. Which vessels do deoxygenated blood cells enter the heart through?
Superior and inferior vena cava
In an EKG reading, the P-wave represents the __________.
electrical activity of the atria.
Which structure forms the apex of the heart and is responsible for pumping blood away from the heart?
Ventricles
Pulmonary veins are the only veins which carry _________ blood.
Oxygenated
A diastolic pressure of 81 to 89 mmHg places an individual in which of the following categories?
A. Hypotension
B. Normal
C. Prehypertension
D. Stage 1 (mild) hypertension
C. Prehypertension
The sections of the aorta include __________.
Ascending aorta, aortic arch, descending aorta
The electrical impulse to trigger a heartbeat comes from the nervous system and arrives at the __________.
SA node
When the right atrium contracts, blood is pushed through the ______ ______ and into the right ventricle
Tricuspid valve
List all types of blood vessels in the body. (5)
Arteries
Arterioles
Veins
Veinules
Capillaries
Jacob has a blood pressure of 130/95. He is trying to determine his pulse pressure. What is Preston's pulse pressure?
35 mmHg
_________ circulation is responsible for bringing deoxygenated blood to the alveoli in the lungs for oxygenation.
Pulmonary
Which wave(s) represents the electrical activity of the ventricles?
QRS complex