Question

TRUE OR FALSE

The ventricular ejection phase generally correlates with the S-T segment and the T wave on the ECG.

Lymphatic vessels constitute a one-way system that delivers fluid form the blood vessels to the extracellular space

Systole is the contraction portion of the cardiac cycle and diastole is the relaxation portion.

There are typically four pulmonary veins, two draining each lung. They all connect to right atrium.

The sympathetic nervous system increases blood pressure in the short term by increasing cardiac______output¬¬¬¬¬____and___bloodpressure.

The rapid depolarization phase of the contractile cell action potential is due to the opening of voltage-gated potassium ion channels.

The buffy coat is the fraction of an anticoagulated blood sample that contains most of the leukocytes and thrombocytes.

Erythrocytes are biconcave discs with prominent nuclei. The main function of erythrocytes is to transport O2 on the molecule hemoglobin.

The plateau phase in cardiac cell is due to the influx of calcium ions through calcium ion channels
The amount of blood in the ventricles at the end of the ventricular filling phase is the end –systolic volume

The first branch of the aortic arch is the brachiocephalic artery, which divides into the left common carotid artery and the left subclavian artery.

Tissue perfusion to the heart decreases during systole and increases during diastole

Atrial systole is responsible for ejecting most of the blood into ventricles during the ventricular filling phase of the cardiac cycle

.

During heart transplant surgery, an electric shock is sometimes needed to make the donor heart beat properly because the electric shock activates the sympathetic nerve fibers in the ventricles.

People with type AB- (negative) blood are universal recipients because they have no antibodies to A, B or Rh in their blood and can receive red blood cells from a donor of any blood type.

Answer 1

Ans 1 --->The ventricular ejection phase generally correlates with the S-T segment and the T wave on the ECG ----

False

Ventricular ejection phase or ventricle systole corelates with QRS segment of ECG, Atrial contraction coreates with

P wave.

Ans 2 ---> Lymphatic vessels constitute a one-way system that delivers fluid form the blood vessels to the extracellular space --- True

Ans 3 --Systole is the contraction portion of the cardiac cycle and diastole is the relaxation portion --- True

Ans 4 --There are typically four pulmonary veins, two draining each lung. They all connect to right atrium- False

--> There are typically four pulmonary veins, which drains to the left atrium

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