BIOLOGY 12: Heart Study Guide Mr. Kruger
Name:__________________________________________ Blk:_____
For any diagram of a heart given, you must be able to identify all of the parts.
The following is a sample of possible questions.
Unit # 5 Heart Structure and Function
L.O. K – 1 Heart Identification and Functions
___ 1. Explain why the side of the heart on your left in diagrams is called the
right side.
___ 2. What is meant by myocardium?
___ 3. What is the function of the Septum?
___ 4. What is found between the atria and the ventricles?
___ 5. What is different between the valves on the right and left side of the
heart?
___ 6. What structures support the valves of the heart?
___ 7. What are found at the junction of the ventricles and the aorta or
Pulmonary
Trunk?
___ 8. What is the difference between the Pulmonary Trunk and a Pulmonary
Artery.
___ 9. Why are the walls of the Left Ventricle thicker than those of the Right
Ventricle?
___ 10. What is the function of the atria?
___ 11. ***What might happen to a person’s circulation if the Chordae
Tendinae
attached to one of the atrioventricular valves pulled loose?***
L.O. K – 2
SA Node, AV Node, and Pukinje Fibres
BIOLOGY 12: Heart Study Guide Mr. Kruger
___ 1. What is meant by the phrase “the heartbeat is intrinsic”?
___ 2. Another word for the contraction of the heart muscle is?
___ 3. Another word for the relaxation of the heart muscle is?
___ 4. List the phases of the cardiac cycle and the length of time required by
each phase.
___ 5. What causes the Lubb-Dubb sound of a heart beat?
___ 6. What are the two names for the tissue found in the upper wall of the
right atrium?
___ 7. At the bottom of the right atrium is another type of tissue. Name it.
___ 8. What is the function of the sinoatrial node?
___ 9. What happens to the heartbeat if the sinoatrial node is damaged?
___ 10. What is the function of the Atrioventricular node?
___ 11. What carries the message from the AV Node to the ventricle muscle
tissue?
___ 12. Draw and identify the different stages of a normal EKG.
L.O. K – 3 Autonomic Regulation of the Heart
___ 2. The medulla oblongata can alter the rate of the heart beat by way a
nerver in the
nervous system called the
___ 3. The nerve that sends electrical information from the medulla
oblongata to the SA
Node is the?
___ 4. The autonomic nervous system has two parts to it. Name them.
___ 5. The part the speeds up the heart is called the?
___ 6. The part the slows down the heart is called the?
L.O. K – 4 Blood Pressure: Hypertension and Hypotension
BIOLOGY 12: Heart Study Guide Mr. Kruger
___ 1. What is the name for the device that takes blood pressure readings?
___ 2. What is a normal blood pressure for a young adult?
___ 3. The first number in a blood pressure reading stands for what?
___ 4. The second number in a blood pressure reading stands for what?
___ 5. A pulse is initiated by what part of the heart?
___ 6. What features of the arteries make a pulse possible?
___ 7. How does the expansion and contraction of an artery help maintain
blood
pressure?
___ 8. Define hypertension.
___ 9. Define hypotension
___ 10. Be able to list at least 5 very important factors that are responsible for
high blood
pressure.
___ 11. Explain how the arterioles and capillaries can regulate blood pressure.
L.O. K – 5 Systolic Pressure vs Diastolic Preesure
___ 1. The highest arterial pressure is called?
___ 2. The lowest arterial pressure is called?
___ 3. Diastolic pressure occurs while the heart ventricles are?
___ 4. Systolic pressure occurs while the heart is?
___ 5. What blood vessel has the highest blood pressure?
___ 6. What blood vessel has the lowest blood pressure?
___ 7. Can you have a blood pressure of 120/140? Explain.