Self Studies
Self Studies
Self Studies
Self Studies

Body Fluids and Circulation Test - 21

Result Self Studies

Body Fluids and Circulation Test - 21
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    The condition which cannot be detected by ECG is: 
    Solution
    As each wave of contraction spreads through the heart, electric currents flow into the tissues surrounding the heart and onto the body surface. By placing electrodes on the body surface on opposite sides of the heart, a physician can amplify and record the electrical activity. The graph produced is called an electrocardiogram (EKG or ECG). Abnormalities in the EKG indicate disorders in the heart or its rhythm. For example, in heart block, impulse transmission is delayed or blocked at some point in the conduction system. Artificial pacemakers can help patients with severe heart block. The pacemaker is implanted beneath the skin and its electrodes connected to the heart. This device provides continuous rhythmic impulses that avoid the block and drive the heartbeat. Angina (pain in chest) and defects in heart valve can also be detected through an abnormal ECG. Ulcers in stomach or Gastric ulcers cannot be detected by an ECG.
  • Question 2
    1 / -0
    Select the correct schematic representation of blood circulation in human from the followings
    Solution
    The essential components of the human cardiovascular system are the heart, blood, and blood vessels. It includes the pulmonary circulation, a loop through the lungs where blood is oxygenated; and the systemic circulation, a loop through the rest of the body to provide oxygenated blood. Arteries are blood vessels which carry blood coming from heart to various organs of the body. Blood flows inside the arteries with jerk due to pumping activity of the heart. Veins are blood vessels which carry blood from various parts of the body towards the heart. Blood flows smoothly and slowly inside veins. Pulmonary arteries carry deoxygenated blood from the heart to the lungs and pulmonary veins receive oxygenated blood from the lungs to the left atrium of the heart. 
  • Question 3
    1 / -0
    The volume of blood each ventricle pumps out during a cardiac cycle is about
    Solution
    Stroke volume (SV) is the amount of blood pumped out of the heart (left ventricle to the body) during each contraction measured in ml/beat (milliliters per beat). Stroke volume is an important determinant of cardiac output, which is the product of stroke volume and heart rate. The stroke volumes for each ventricle are generally equal, both being approximately 70 ml in a healthy 70 kg man.
  • Question 4
    1 / -0
    If the heart sound recording and the ECO recordings are superimposed then the first heart sound would occur?
    Solution
    When you listen to the heart beat with a stethoscope, you can hear two main heart sounds, lub-dup, which repeat rhythmically. These sounds result from the heart valves closing. When the valves close, they cause turbulence in blood flow that sets up vibrations in the walls of the heart chambers. The first heart sound, lub, is low-pitched, not very loud, and fairly long-lasting. It is caused mainly by the closing of the AV ( mitral and tricuspid) valves and marks the beginning of ventricular systole. The lub sound is quickly followed by the higher-pitched, louder, sharper, and shorter dup sound. Heard almost as a quick snap, the dup marks the closing of the semi lunar valves and the beginning of ventricular diastole. The quality of these sounds tells a discerning physician much about the state of the valves. In the typical ECG recording the peaks "QRS" correspond to ventricular systole. The "lub" sound will be immediately followed by ventricular systole, corresponding to QRS peak in the ECG.
  • Question 5
    1 / -0
    Lymph flows in ............... direction.
    Solution
    The lymph moves in the body through its own vessels from the interstitial spaces to the subclavian veins at the base of the neck. The lymphatic system does not have the heart to pump it in all direction hence it flows in the upward direction only. Its movement depends on the motions of the muscle and joint pumps. 
    Therefore, the correct answer is option A.
  • Question 6
    1 / -0
    What is the life span of thrombocytes?
    Solution
    Platelets, also called thrombocytes, are blood cells whose function is to stop bleeding. The average life span of circulating platelets is 7 to 10 days.
  • Question 7
    1 / -0
    The type of epithelium seen in the walls of blood vessels is 
    Solution
    Squamous epithelium is flat, smooth, horizontally elliptical cells, closely packed oval cells. They line the surface of blood vessels, lungs, pericardium and major cavities in the body. 
    Cuboidal epithelium is mostly found in absorptive and secretive tissues. For example, kidney tubules.
    Columnar epithelium is located in stomach and intestine. Some specialised columnar cells are found to function in sensory receptive organs viz; ear, nose, tongue, etc.
    Ciliated epithelium is found in the respiratory tract. Cilia on these cells help to remove dust particles out of the body with its ciliary movements.
    Compound epithelium/stratified epithelium typically found in the mouth, oesophagus, vagina, eyes, etc. so, the correct answer is option A.
  • Question 8
    1 / -0
    The blood does not clot inside the body because of 
    Solution
    In blood, platelets produce thromboplastin only at the site of injury and not in the normal condition which initiates the process of blood clotting. There is an another factor or protein called fibrinogen. When it makes contact with oxygen, it polymerizes to fibrin wires, creating a heap of fibrin wires, in which the various blood cells get caught, thus clogging the wound. Because all the oxygen in the blood is already bound to haemoglobin (red cells), it can't interact with the fibrinogen, thus cannot create a clot. Thus, the correct answer is option C.
  • Question 9
    1 / -0
    Vasa vasorum is a blood vessel, that supplies blood to
    Solution
    Vasa vasorum is a network of small blood vessels that supply blood to the walls of large blood vessels, for example elastic arteries (aorta) and large veins (vena cava). 
    There are three major types of vasa vasorum: 1. vasa vasorum internae originate from inside the main artery or vein and pass into the vessel's walls. 2. Vasa vasorum externae originate in the main artery's branches, then return to the main artery or vein to nourish the cells farther away from the vessel's interior. 3. Venous vasa vasorae have their origins in the main artery, then drain into the artery's partner vein.
    Hence option C is correct.
  • Question 10
    1 / -0
    A drop of each of the following, is placed separately on four slides. Which one of them will not coagulate?
    Solution

    Solution

    Correct answer is option A.
    Explanation for correct option:

    • Blood serum is the component of blood that has neither a blood cell nor a clotting factor.
    • Serum includes all proteins not used in blood clotting (coagulation) and all the electrolytes, antibodies, antigens, hormones, and any exogenous substances (e.g., drugs and microorganisms).
    • Hence, serum does not clot.  

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now