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Most of the medicines/saline are adminis...

Most of the medicines/saline are administered through veins than arteries.

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Accident victims or critical cases need immediate relief. For this purpose, the intravenous injections are given which enter directly in the blood circulation. The effect becomes rapid due to direct administration in the blood circulation, therefore medicines or saline is directly given through the veins.
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The velocity of blood in veins is greater than that in arteries.

Distinguish arteries from veins.

Knowledge Check

  • The arteries differ from veins in having :

    A
    Arteries consist of three distinct layers , which are thin and collapsible whereas veins consist of three distinct layers, which are rigid , thicker and highly muscular.
    B
    Veins consist of three distinct layers, which are thin and collapsible whereas arteries consist of three distinct layers , which are rigid , thicker and highly muscular.
    C
    Veins consist of two distinct layers, which are thick and collapsible whereas arteries consist of three distinct layers , which are rigid , thicker and highly muscular.
    D
    Arteries consist of three distinct layers , which are thin and muscular whereas veins consist of three distinct layers, which are rigid , thicker and highly vascular.

  • William Harvey (1578–1657) was one of the early biologists who studied the bodies of humans and animals. He even dissected the bodies and did experiments with the heart and blood vessels. He concluded from his experiments that the blood leaves the heart through the arteries and returns via the veins. However, he could not explain how blood left the arteries to enter the veins. He said there must be some structure between arteries and veins but he could not find them. Marcello Malphigi (1628–1694) later discovered these structures while studying a dead frog's lungs under a microscope. Which of the following statements about arteries and veins is TRUE?

    A
    Arteries have thicker walls than veins.
    B
    Veins have thicker walls than arteries.
    C
    All arteries carry only oxygenated blood.
    D
    All veins carry only deoxygenated blood.

  • William Harvey (1578–1657) was one of the early biologists who studied the bodies of humans and animals. He even dissected the bodies and did experiments with the heart and blood vessels. He concluded from his experiments that the blood leaves the heart through the arteries and returns via the veins. However, he could not explain how blood left the arteries to enter the veins. He said there must be some structure between arteries and veins but he could not find them. Marcello Malphigi (1628–1694) later discovered these structures while studying a dead frog's lungs under a microscope. What is the MOST LIKELY reason why Harvey could NOT find these structures?

    A
    These structures are not found in humans.
    B
    These structures are found only in the lungs.
    C
    These structures become visible only in dead animals
    D
    These structures were too small to be seen by the naked eye.

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    Differentiate between arteries, veins and capillaries.

    Select the correct active form of the given sentence. Let the medicine be administered every four hours.

    William Harvey (1578–1657) was one of the early biologists who studied the bodies of humans and animals. He even dissected the bodies and did experiments with the heart and blood vessels. He concluded from his experiments that the blood leaves the heart through the arteries and returns via the veins. However, he could not explain how blood left the arteries to enter the veins. He said there must be some structure between arteries and veins but he could not find them. Marcello Malphigi (1628–1694) later discovered these structures while studying a dead frog's lungs under a microscope. Which two chambers of the human heart have arteries connected to them?

    William Harvey (1578–1657) was one of the early biologists who studied the bodies of humans and animals. He even dissected the bodies and did experiments with the heart and blood vessels. He concluded from his experiments that the blood leaves the heart through the arteries and returns via the veins. However, he could not explain how blood left the arteries to enter the veins. He said there must be some structure between arteries and veins but he could not find them. Marcello Malphigi (1628–1694) later discovered these structures while studying a dead frog's lungs under a microscope. Which of the following structures did Malphigi find in the frog?

    The blood flows strictly by a fixed route through blood vessels, the arteries and veins. Basically, each artery and vein consists of three layers. Which of the following layer consists of smooth muscles elastic fibres?

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