Question

In: Biology

b1-Which of the following is not a characteristic of arteries? A-many layers of smooth muscle ...

b1-Which of the following is not a characteristic of arteries?

A-many layers of smooth muscle C. several elastic layers

E. have internal valvest hey always carry blood away from the heart D. have endothelium

2-Which of the following is the correct path that blood takes when it leaves the heart

Arteries to arterioles to capillaries to venules to veins to heart

Veins to venules to capillaries to arterioles to arteries to heart

Capillaries to arteries to arterioles to venules to veins to heart

Arteries to arterioles to capillaries to veins to venules to heart

3-Blood enters capillaries at high pressure, so some fluid is forced out. What happens to that fluid?

Some of it is recaptured by the capillaries at the arteriole end

Some is captured by the lymphatic system and returned to the blood

Some is captured by the lymphatic system and taken to the urinary bladder

A and C

A and B

4-Explain the difference between tidal ventilation and flow-through ventilation

Expert Solution

1. Which of the following is not a characteristic of arteries?

Ans: E. have internal valves (no veins have an internal valve, though the pressure in the valve is less to prevent backflow of the blood valves are present)

2. Which of the following is the correct path that blood takes when it leaves the heart?

Ans: A. Arteries to arterioles to capillaries to venules to veins to the heart

3. Blood enters capillaries at high pressure, so some fluid is forced out. What happens to that fluid?

Ans: A & B

Some of it is recaptured by the capillaries at the arteriole end

Some are captured by the lymph vessels of the lymphatic system and returned to the blood

4. Difference between tidal ventilation and flow-through ventilation

Tidal ventilation: It involves moving the respiratory medium in and out of a respiratory organ. For example, in the mammalian lung, air goes in and comes out along the same pathway.

flow-through ventilation: a way of ventilation as in fish where water moves unidirectionally so gills are in a continuous contact with water.

gladiator answered 2 years ago

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