2. Виберіть правильний час і стан для дієслів в дужках. 1. At the entrance and exit of the ventricles you can (to see) four valves. 2. There (to be) the period of rest between the heart beats. 3. Arteries are muscular blood vessels that (to carry) blood away from the heart. 4. An arteriole is a small artery that (to extend) and (to lead) to capillaries. 5. Capillaries (to be) the smallest of the body’s vessels. 6. The “capillary bed” (to be) the network of capillaries present throughout the body. 7. The artery walls are thick so that when blood (to enter) under pressure, the walls expand. 8. Capillaries (to be) very prevalent in the body – their total surface area (to be) about 6,300 square meters. 9. The aorta (to go) to the border of the fourth lumbar vertebra and here it (to finish) dividing into the left and right iliac arteries. 10. The heart (to beat) roughly 100,000 times per day, sending blood on its journey around the body.

Ответ:

At the entrance and exit of the ventricles you can see four valves. (Present Simple)

There is the period of rest between the heart beats. (Present Simple)

Arteries are muscular blood vessels that carry blood away from the heart. (Present Simple)

An arteriole is a small artery that extends and leads to capillaries. (Present Simple)

Capillaries are the smallest of the body’s vessels. (Present Simple)

The “capillary bed” is the network of capillaries present throughout the body. (Present Simple)

The artery walls are thick so that when blood enters under pressure, the walls expand. (Present Simple)

Capillaries are very prevalent in the body – their total surface area is about 6,300 square meters. (Present Simple)

The aorta goes to the border of the fourth lumbar vertebra and here it finishes dividing into the left and right iliac arteries. (Present Simple)

The heart beats roughly 100,000 times per day, sending blood on its journey around the body. (Present Simple)