Biology · General Awareness

Human Circulatory System

818 Questions

The human circulatory system explores the network of blood vessels, heart valves, and structural pathways. Test items often target blood flow sequences and specific vascular functions. Mastering these details is vital for biology preparation.

Heart valves and chambersBlood vessels and venulesArteries of the bodyBlood supply to organsCentral nervous system supply

Human Circulatory System Questions

Multiple choice zoology excretion and osmoregulation micturition urine and urine formation urine formation

Angiotensin - II causes 

  1. Contraction of vascular musculature

  2. Release of aldosterone from cortex

  3. Dilation of blood vessels

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Angiotensin is a peptide hormone that causes vasoconstriction and an increase in blood pressure. It is part of the renin–angiotensin system, which regulates blood pressure. Angiotensin also stimulates the release of aldosterone from the adrenal cortex to promote sodium retention by the kidneys.


So the correct option is 'Both A & B'.

Multiple choice evs our body- its internal organ system leucocytes body fluids and immune responses respiratory and circulatory system

The different types of the blood vessels seen in the body are

  1. Three

  2. Two

  3. Four

  4. Five
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
There are three different types of blood vessels in the body namely arteries, veins and capillaries. Arteries are the blood vessels which carry blood away from the heart while veins carry blood towards the heart. Capillaries are the smallest blood vessels which connect arteries and veins. 
Therefore, the correct answer is option A.
Multiple choice bio-chemistry diseases and immunity antibodies antibodies and antitoxin antigen and antibody

Antibody formation and immunity production by globulin protein is found in 

  1. Haemoglobin of RBC's

  2. Blood platelets

  3. Plasma

  4. Cytoplasm of RBC's
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An antibody is produced by plasma cell. This plasma cell /plasma B cells/effector B cell are white blood cells that secrete large volumes of antibodies. Plasma cell originates in the bone marrow. B cell differentiate into a plasma cell that produces antibody molecules. These are transported by the blood plasma and the lymphatic system. Once these are released into the blood and lymph, these antibody molecules bind to the target antigen and initiate its neutralization or destruction.

So the correct answer is 'Plasma'.

Multiple choice bio-chemistry diseases and immunity antibodies antibodies and antitoxin antigen and antibody

Gamma-globulins are synthesised in

  1. Lymph and lymph nodes

  2. Liver

  3. Bone marrow

  4. Kidney
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Globulins are immune molecules that are produced by the immune system in response to the invasion of the body of agents that are perceived by the system as being foreign. Gamma globulins belong to the class of globulins. Most significant globulins are immunoglobulins. Gamma globulins are synthesized in cells of the immune system known as lymphocytes, lymph nodes, lymph and plasma cells. 

So, the correct answer is 'Lymph and lymph nodes'.

Multiple choice biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans
Which of the following is richly supplied with blood capillaries?

  1. Duramater

  2. Arachnoid

  3. Piamater

  4. Epidermis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The meninges are the layers that are closely present around the brain. The dura mater is an outermost tough and fibrous layer. It is followed by the arachnoid mater that forms the middle meninx. The piamater is the innermost meninx which adheres closely to the surface of the brain. It is highly vascular due to the rich supply of the blood vessels. So, it provides oxygen and nutrients to the cells of the brain.

Hence, the correct answer is 'Piamater'

Multiple choice biology nervous system of man human nervous system the structure of brain the human brain

Which of the following is a richly vascular layer with lots of blood capillaries?

  1. Dura mater

  2. Pia mater

  3. Epidermis of skin

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pia mater of the brain is the innermost of the three membranes, that cover it. It is the vascular membrane of the brain. It carries the minute branches of the two internal carotids and the two vertebral arteries. It also returns the blood to the heart. The dura mater is the most external membrane of the brain. It forms the internal periosteum of the skull. The dura mater is a dense, tough, inelastic fibrous membrane. The epidermis contains no blood vessels, and cells in the deepest layers are nourished by diffusion from blood capillaries extending to the upper layers of the dermis. So, the correct answer is option B.

Multiple choice biology blood circulatory system of human blood clotting platelets and their function defence against infectious disease

The solid part of blood is

  1. Plasma

  2. Red blood corpuscles

  3. White blood corpuscles

  4. Red, white corpuscles and platelets
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood is living tissue which is made up of liquid and solids. The liquid part, called as plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets. Red blood cells deliver oxygen from your lungs to your tissues and organs. White blood cells fight infection and are part of your body's defense system. Platelets help blood to clot when you have a cut or wound. Bone marrow, the spongy material inside your bones, makes new blood cells. Blood cells constantly die and your body makes new ones. Red blood cells live about 120 days, and platelets live about 6 days. Some white blood cells live less than a day, but others live much longer. 

Therefore, the correct answer is option D.

Multiple choice biology blood circulatory system of human blood clotting platelets and their function defence against infectious disease

Blood clot inside a blood vessel is called as

  1. Thrombosis

  2. Agglutinin

  3. Clot

  4. Thrombus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The blood clot formed inside the blood vessel is called as a thrombus. When this thrombus breaks and travels to different parts of the body, then it is called embolus. Agglutinin is responsible for the agglutination.

Hence, the correct answer is 'Thrombus'

Multiple choice biology blood circulatory system of human blood clotting platelets and their function defence against infectious disease

With reference to the blood in a normal person, which one of the following statements is correct?

  1. Compared to arteries, veins are less numerous and hold less of the body's blood at any given time.

  2. Blood cells constitute about 70 percent of the total volume of the blood.

  3. White blood cells (WBC) are made by lymph nodes only.

  4. The blood has more platelets than WBC.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells and platelets. The blood has more platelets than WBC. A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. An average normal range for white blood cells is between 4,500 and 10,000 /mcl.
Blood has many different functions. They are as follows:
  • Transporting oxygen and nutrients to the lungs and tissues.
  • Forming blood clots to prevent excess blood loss.
  • Carrying cells and antibodies that fight infection.
  • Bringing waste products to the kidneys and liver, which filter and clean the blood.
  • Regulating body temperature.
Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

________ caries blood from right ventricles to lungs.

  1. Superior vena cava

  2. Inferior vena cava

  3. Pulmonary arteries

  4. Pulmonary veins
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The pulmonary artery is a blood vessel which delivers impure blood from right ventricles to lungs for the oxygenation. Pulmonary artery begins from the base of the right ventricle. As it leaves the heart it divides into two branches left and right pulmonary artery. The left and right branches bring their de-oxygenated blood to the corresponding left and right lungs.
So, the correct answer is 'Pulmonary arteries'.
Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

The pulmonary artery carries deoxygenated blood from the ........... to the lungs.

  1. Left ventricle

  2. Right ventricle

  3. Left auricle

  4. Right auricle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pulmonary circulation carries blood to and from the lungs. They include the pulmonary artery (aorta) and its branches to the capillaries in the lungs, as well as the veins, that drain those capillaries. The pulmonary arteries carry blood low in oxygen from the right ventricle, while the pulmonary veins carry blood high in oxygen from the lungs into the left atrium. This circuit functions to eliminate carbon dioxide from the blood and replenish its supply of oxygen.

So, the correct answer is option B.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Which of the following statement is correct regarding humans?

  1. Arteries always carry oxygenated blood while veins always carry deoxygenated blood

  2. Arteries. are provided with valves while veins are devoid of valves

  3. Arteries always carry blood away from the heart, while veins always carry blood towards the heart

  4. Venous blood is returned to the left ventricle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Arteries carry blood oxygenated blood away from the heart. While the veins carry deoxygenated blood towards the heart.

Pulmonary artery carries deoxygenated blood to the lungs for oxygenation. Pulmonary vein brings oxygenated blood to heart. 
So, the correct answer is option C.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Body receives blood through arteries. Which one is out of place?

  1. Aorta

  2. Renal artery

  3. Coronary artery

  4. Pulmonary artery
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. Aorta is the largest artery in body which supplies blood from heart to rest of the body parts.
B. Renal arteries are blood vessels that branch from abdominal aorta and supply blood to the kidneys.
C. Coronary arteries supply the oxygenated blood to heart.
D. Pulmonary artery carries deoxygenated blood from right ventricle to the lungs. 
Hence, body receives blood through arteries except the lungs which receive deoxygenated blood through pulmonary artery.
So, the correct answer is 'Pulmonary artery'.