teas science 6 - cardiovascular system 2/21/19 1 ati teas science review bodily organs and systems...

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  • 2/21/19

    1

    ATI TEAS SCIENCE REVIEW

    BODILY ORGANS AND SYSTEMS

    ATI TEAS SCIENCE – BODILY ORGANS AND BODILY SYSTEMS

    Questions related to the Bodily Organs and Systems will test your knowledge of structures and functions within the ten human organ systems that are essential to life. You may also be tested on vocabulary terms related to your understanding of anatomy. You must understand these vital body systems when caring for patient’s co-morbidities.

    Please note that the ATI TEAS will only cover basic knowledge of bodily organs and systems. More in-depth knowledge will be covered in our Anatomy and Physiology Series.

    Let’s get started on understanding how the bodily organs and systems are important on the ATI TEAS.

    ATI TEAS SCIENCE – BODILY ORGANS AND BODILY SYSTEMS

    THE CARDIOVASCULAR SYSTEM

    The cardiovascular, or circulatory, system transports blood pumped from the heart throughout the entire body. The blood is carried through various blood vessels and contains vital nutrients, oxygen, and hormones to help maintain the body’s homeostasis.

    There are three types of blood vessels that work in conjunction with the heart to provide blood to the body. These vessels form a network that carries the blood pumped from the heart to the body’s tissues and back to the heart again.

    • Arteries carry blood away from the heart.

    • Capillaries transmit nutrients and waste products between arteries and veins.

    • Veins bring the blood back to the heart.

    PHOTO CREDIT: THE BIOLOGY PLACE

    ATI TEAS SCIENCE – BODILY ORGANS AND BODILY SYSTEMS

    THE CARDIOVASCULAR SYSTEM

    The heart is the major organ relevant to the circulatory system. It consists of four chambers and two circulatory systems.

    • In pulmonary circulation, oxygen poor blood coming from the body enters the heart through the right atrium and is pumped by the right ventricle to the lungs to receive oxygen.

    • Blood is then pumped by the left ventricle to the left atrium and then sent out to the body. The process of delivering oxygen-rich blood to the rest of the body is called systemic circulation.

    PHOTO CREDIT: HUMAN ANATOMY

    ATI TEAS SCIENCE – BODILY ORGANS AND BODILY SYSTEMS

    THE CARDIOVASCULAR SYSTEM

    The heart has its own system of blood vessels that circulates blood for its own function. This system is called the coronary system.

    PHOTO CREDIT: MEDCHROME TUBE

    ATI TEAS SCIENCE – BODILY ORGANS AND BODILY SYSTEMS

    THE CARDIOVASCULAR SYSTEM

    The cardiac cycle is the process of one heart beat: the heart contracts and blood is forced out; then it relaxes and the heart fills with blood. The stage of contraction is called systole, and the stage of relaxation is called diastole.

    PHOTO CREDIT: BERNAL STUDIO