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1 The arteries of the circulatory system have valves that aid ingetting blood back to the heart. true or false

2 Hemoglobin contains what metal that aids in the delivering ofoxygen to body tissues?

Silver
Gold
Iron
Aluminum

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Collen Von
Collen VonLv2
29 Sep 2019

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Related questions

Which one of the following IS NOT a function of the Human Circulatory System?

mounting a response to invading microorganisms
transporting hormones
nutrient transport
waste transport
wound clotting
urine transport

Which one of the following paths shows the correct pathway for blood in the blood vessels?

Arteries -> Veins -> Capillaries -> Venules -> Arterioles
Arteries -> Arterioles -> Capillaries -> Venules -> Veins
Capillaries -> Veins -> Venules -> Arterioles -> Arteries
Veins -> Venules -> Capillaries -> Arteries -> Arterioles

A Heart Murmur is a defect in one or more heart valves that permits a backflow of blood and reduces the Blood volume output of the Heart.

True
False

1. How is CO2 transported in the blood? (pick one)

a. Most of it binds to hemoglobin alongside with oxygen

b. It competes with oxygen for the biding site with hemoglobin.

c. It forms calcium carbonate CaCO3 increasing the pH of the blood (more basic)

d. It dissolves as bicarbonate ion H2CO3 decreasing the pH of the blood (more acidic)

--------------------------------

2. Which of the following describes a closed circulatory system?

a. Nutrients diffuse from gastrovascular cavity into the tissues and waste diffuses in the opposite direction.

b. Nutrients and waste diffuse in and from the pseudocoelm

c. Hemolymph moves from the heart into the tissues and cavities and then drains back into the main cavity.

d. Blood moves from the heart into arteries and into smaller vessels and then back into larger vessels as it makes its way back to the heart.

1) Check all that are components of the sympathetic innervation of the heart.

Check All That Apply

Cervical sympathetic ganglion

Spinal cord Spinal cord

Vagus nerve (CN X)

Cardiac nerve

Sympathetic postganglionic axon

2) Check all that occur during ventricular contraction.

Check All That Apply

The AV valves open to allow blood to enter the ventricles from the atria.

The semilunar valves remain closed to prevent backflow of blood into the ventricles.

The semilunar valves open to allow blood to flow into the large arteries.

The AV valves close to prevent backflow of blood into the atria.

3) Put the pattern of circulation into the correct order, beginning with the pulmonary circulation.

Blood enters the plumonary arteries and travels to the lungs.

Blood leaves the right side of the heart.

Blood enters the plmonary veins.

Blood enters the system arteries.

Blood delivers oxygen to the tissues, and then enters systematic veins.

Blood enters the left side of the heart.

4)Check all that are characteristics of cardiac muscle.

Check All That Apply

Cells are long and cylindrical.

Cells are short and branching.

Cells have multiple nuclei at the periphery of the cell.

Cells have one or two nuclei in the center of the cell.

They are composed of thick and thin filaments.

The functional contractile unit is the sarcomere.

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