Exam 2: NU110 / NU 110 (New 2025 / 2026 Update) Integrated Human Sciences | Questions with Verified Answers | 100 % Correct | Grade A – Galen.

Exam 2: NU110 / NU 110 (New 2025 /
2026 Update) Integrated Human
Sciences | Questions with Verified
Answers | 100 % Correct | Grade A –
Galen.

Question:

During ventricular contraction, the AV valves close to:
i,- i,- i,- i,- i,- i,- i,-




A. speed up the action potential as it moves through the conduction
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-


system.

B. prevent the backflow of blood from the ventricles to the atria.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




C. enhance drainage of the coronary veins.
i,- i,- i,- i,- i,- i,-




D. push blood into the venae cava.?
i,- i,- i,- i,- i,- i,-




Answer:
B. prevent the backflow of blood from the ventricles to the atria.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




Question:

The purpose of the left heart is to
i,- i,- i,- i,- i,- i,- i,-




A. receive oxygenated blood and pump it to all organs of the body.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




B. pump blood into the pulmonary artery.
i,- i,- i,- i,- i,- i,-

,C. pump blood to the lungs for oxygenation.
i,- i,- i,- i,- i,- i,- i,-




D. receive blood from the venae cava.?
i,- i,- i,- i,- i,- i,-




Answer:

A. receive oxygenated blood and pump it to all organs of the body.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




Question:
Which step is next in the pathway of blood flow through the heart?
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-


Pulmonary trunk to pulmonary arteries to pulmonary capillaries to
i,- i,- i,- i,- i,- i,- i,- i,- i,-



pulmonary veins to: i,- i,-




A. pulmonic semilunar valve.
i,- i,- i,-




B. left atrium.
i,- i,-




C. right atrium.
i,- i,-




D. aorta.?
i,-




Answer:

B. left atrium.
i,- i,-




Question:

The pacemaker of the heart is the
i,- i,- i,- i,- i,- i,-




A. SA node.
i,- i,-




B. AV node.
i,- i,-




C. bundle of His.
i,- i,- i,-

,D. Purkinje fibers.?
i,- i,-




Answer:

A. SA node.
i,- i,-




Question:

Cardiac impulse slows as it moves through the AV node into the bundle of
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-


His. The slowing down allows
i,- i,- i,- i,-




A. time for the ventricles to fill during the atrial contraction.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




B. blood pressure to be maintained.
i,- i,- i,- i,- i,-




C. the flow of blood to slow to an acceptable rate.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




D. automaticity and rhythmicity to occur.?
i,- i,- i,- i,- i,-




Answer:

A. time for the ventricles to fill during the atrial contraction.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




Question:
During ventricular systole:
i,- i,-




A. the atria contract and pump blood into the ventricles.
i,- i,- i,- i,- i,- i,- i,- i,- i,-




B. the AV valves are open and the ventricles are relaxed.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




C. the ventricles contract and eject blood.
i,- i,- i,- i,- i,- i,-




D. the semilunar valves remain closed.?
i,- i,- i,- i,- i,-




Answer:

, C. the ventricles contract and eject blood.
i,- i,- i,- i,- i,- i,-




Question:

Which of the following is a consequence of sympathetic nerve stimulation?
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




A. Increased myocardial force of contraction
i,- i,- i,- i,- i,-




B. Peripheral vasodilation
i,- i,-




C. Decreased heart rate
i,- i,- i,-




D. All of the above?
i,- i,- i,- i,-




Answer:
A. Increased myocardial force of contraction
i,- i,- i,- i,- i,-




Question:
Spongy bone i,-




A. has a microscopic structure unit known as the haversian system.
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-




B. is found primarily in the shafts of long bones and the outer surfaces of
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-


bones.

C. can be found in the epiphyses of long bones.
i,- i,- i,- i,- i,- i,- i,- i,- i,-




D. is composed of tightly packed cells and provides the strength for
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-


bones.?
Answer:

C. can be found in the epiphyses of long bones.
i,- i,- i,- i,- i,- i,- i,- i,- i,-