Circulatory Test

What process narrows blood vessels diameter.

• vasodilation

• vasoconstriction

• vasocompression

• vasocontraction

Tags

NGSS.HS-LS1-3

The first heart sound is produced when

• Diastole begins

• Semilunar valves close quickly

• Interventricular pressure increases

• Bicuspid and tricuspid valves close quickly

As the heart becomes stronger, resting heart rate

• decreases

• increases

• remains the same

Tags

NGSS.HS-LS1-3

The FREQUENCY of heart contractions is...

• heart rate

• blood pressure

• respiratory rate

• voluntary muscle contraction

Tags

NGSS.HS-LS1-3

Bicuspid valve and tricuspid valves are closed during

• Ventricular systole

• Ventricular diastole

• Atrial systole

• Late joint diastole

The three steps of hemostasis are:
1. vascular spasm
2. ___________
3. coagulation

• platelet plug formation

• agglutination

• dilation
  

• erythropoieten formation

Which phase of an ECG/EKG signals when the ventricles contract?

• P

• QR

• QRS

• T

• S

The pacemaker of the heart is the

• SA Node

• AV Node

• Bundle of His

• Purkinje Fibres

__________are structures that close to prevent blood from going backwards.

• ventricles

• valves

• veins

• arteries

What is the function of hemoglobin?

• to carry iron

• to carry wastes

• to carry oxygen

• to produce oxygen

Tags

NGSS.HS-LS1-7