a&p II lab practical 1
Match these vocabulary terms to their meanings
A very slow heart rate is called bradycardia. A(n) electrocardiograph is an instrument used to record a person 19s heartbeat. A(n) electrocardiogram is a graphic recording of a person 19s heartbeat. A very quick heart rate is called tachycardia.
What is the function of the coronary circulation?
Provide a blood supply to the heart
The deflection waves of an ECG correlate to electrical changes, either depolarization or repolarization, of the heart's chambers. Match the electrical events in the heart with the waves, segments, and intervals of a normal ECG tracing
QRS complex: Ventricular depolarization S-T segment: Period of uniform depolarization of the ventricles T wave: Ventricular repolarization P wave: Atrial depolarization
Match these vocabulary terms to their meanings
The interventricular septum is located between the ventricles. The myocardium is mostly made up of cardiac muscle tissue. The epicardium is the outer layer of the heart wall. Endocarditis is an infection of the inside lining of the heart.
Match these prefixes, suffixes and roots to their meanings
The prefix epi- means "above," "upon" or "over." The prefix inter- means "between." The prefix myo- means "muscle." The prefix cardi- means "heart."
Match these prefixes, suffixes and roots to their meanings
The root word -gram means "a recording." The root word brady- means "slow." The root word -graph means "to record." The root word tachy- means "quick."
Of the systemic vessels listed, which one receives blood last?
abdominal aorta
If a drop of blood is located in the left ventricle, through what structure will it next pass?
aortic semilunar valve
identify the highlighted vessel
ascending aorta
Identify the ear like flaps that are attached to the top chambers of the heart.
auricle
Identify the three branches of the highlighted vessel
brachiocephalic trunk, left common carotid artery, left subclavian artery
Identify the highlighted structures
chordae tendineae
identify highlighted artery
circumflex
The base of the heart is located at the bottom of the heart.
false
In the fetus, what structure is located at the highlighted site?
foramen ovale
identify the highlighted structure
interatrial septum
Match each of the following structures with its correct description
left atrium: receives blood from the pulmonary veins aorta: largest artery in the body chordae tendinae: heart strings pulmonary trunk: arises from right ventricle left ventricle: pumps blood to the aorta right atrium: receives blood from venae cavae right ventricle: pumps blood to pulmonary trunk bicuspid valve: right AV valve tricuspid valve: left AV valve
identify highlighted part
left ventricle
Identify the highlighted artery
marginal
Identify the highlighted vessel
middle cardiac vein
Which layer of the heart wall is composed of the tissue shown here?
myocardium
What is the ligamentum arteriosum?
remnant of ductus arteriosus
Identify the highlighted structure
right auricle
Of the coronary vessels listed, which one receives blood first?
right coronary artery
Identify the highlighted vessels
right pulmonary veins
Identify the highlighted structure
right ventricle
Which chamber of the heart exits into the pulmonary trunk?
right ventricle
identify highlighted vessel
small cardiac vein
Identify the highlighted vessel
superior vena cava
ECG is a graphic recording of __________.
the electrical activity of the heart
The first branch off the arch of the aorta is the brachiocephalic artery in both the sheep and the human.
true
is the highlighted structure closed during atrial systole or during ventricular systole
ventricular systole
