Biology · General Awareness

Human Circulatory System

846 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 evs circulation of blood circulatory system and organs basics of blood and heart transportation in living organisms

.......... pumps deoxygenated blood to the lungs.

  1. Right auricle

  2. Right ventricle

  3. Left auricle

  4. Left ventricle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During ventricular systole, the deoxygenated blood from the right ventricle enters the pulmonary trunk, which carries blood to lungs for oxygenation. Thus option B is the correct answer. 

Multiple choice evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

Blood from the left ventricle is pumped to

  1. Lungs

  2. Left auricle

  3. Right ventricle

  4. All parts of the body
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The left ventricle is the thickest of the heart's chambers and is responsible for pumping oxygenated blood to tissues all over the body. By contrast, the right ventricle solely pumps blood to the lungs.

So, the correct option is 'All parts of the body'.

Multiple choice evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

The blood with no oxygen is received in the 

  1. Left atrium

  2. Left ventricle

  3. Right atrium

  4. Right ventricle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The heart is the pumping organ of the body. It consists of four chambers i.e., the right auricle, left auricle, right ventricle and left ventricle. The right auricle receives the deoxygenated blood from the body and pumps it to right ventricle which in turn pumps it to the pulmonary artery. Whereas left auricle receives blood from lungs and pumps it to left ventricle from where it is pumped to the whole body through the aorta. Thus, the correct answer is option C.
Multiple choice evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

In order for the blood to flow from right ventricle to left ventricle in mammalian heart, it must flow through

  1. Right ventricle, pulmonary arteries, lungs, pulmonary veins, left atrium

  2. Right ventricle, pulmonary veins, lungs, pulmonary arteries, left atrium

  3. Right ventricle, right atrium, lungs, pulmonary veins, left atrium

  4. Right ventricle, systemic aorta, lungs, pulmonary veins, left atrium.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood flows from the right ventricle into the pulmonary arteries to reach the lungs for oxygenation. After gas exchange, it returns via the pulmonary veins to the left atrium before entering the left ventricle.

Multiple choice biology the respiratory system factors affecting breathing exchange of gases transport of respiratory gases

Ischemia is insufficient blood flow to tissues which can result in 

  1. Asphyxiation

  2. Hypoxia

  3. Anemia

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ischemia, meaning insufficient blood flow to a tissue, can also result in hypoxia. This is called as 'ischemic hypoxia'. This can include an embolic event, a heart attack that decreases overall blood flow, or trauma to a tissue that results in damage. An example of insufficient blood flow causing local hypoxia is gangrene that occurs in diabetes. 

Therefore, the correct answer is option B.

Multiple choice biology human brain and sense organs the brain nervous system in humans central nervous system

Choose the correct answer from the alternatives given.
To which of the following organ/blood is supplied by the internal carotid artery?

  1. Kidney

  2. Liver

  3. Heart

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

The brain forms only 2% of the body but uses up to 20% of the oxygen. It is given the top priority during the distribution of oxygen-rich blood. The internal carotid arteries and vertebral arteries carry oxygen-rich blood from the heart to the brain. 

So, the correct option is 'Brain'.

Multiple choice zoology allergy immunity related disorders and problems antibody production and vaccination biotechnology

In anaphylactic shock, the substance which causes the dilation of blood vessels and capillary leakage is 

  1. Adrenaline

  2. Benadryl

  3. Albumin

  4. Histamine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Anaphylaxis is a severe, whole-body allergic reaction. After initial exposure to a substance such as a wasp sting toxin, the allergic child's immune system becomes sensitized to that allergen. 
  • On subsequent exposure to the specific allergen, an allergic reaction, which can involve a number of different areas of the body occur. Specifically, an immunoglobulin antibody protein, IgE, is produced in response to the presence of the allergen. IgE binds to the mast cells, causing them to suddenly release a number of chemicals, including histamine, heparin, serotonin, and bradykinin. 
  • Shock can occur when the released histamine causes the blood vessels to dilate, which lowers blood pressure; histamine also causes fluids to leak from the bloodstream. Hence, In anaphylactic shock, the substance which causes the dilation of blood vessels and capillary leakage is Histamine.
 So, the correct answer is 'Histamine'.

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

pH of blood in arteries and veins is

  1. Higher in arteries and lower in veins

  2. Higher in veins and lower in arteries

  3. Same

  4. Variable in both
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
pH of blood in the arteries is greater than that of the veins as the venous blood contains dissolved $CO _2$, lactic acid and other metabolic waste that makes the venous blood more acidic.
So, the correct answer is 'Higher in arteries and lower in veins'
Multiple choice biology digestion and absorption digestive system- glands mouth and buccal cavity digestive glands

Arterioles provide ___ to liver.

  1. Oxygen

  2. Protein

  3. Energy

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • An arteriole is a small-diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries.
  • The liver receives blood from two major blood vessels. The hepatic arterioles bring oxygen-rich blood from the heart.
  • The hepatic portal vein brings blood rich in digested nutrients from the intestine. This means excess nutrients can be removed and stored before blood circulates around the body. Hence Arterioles provides oxygen to the liver.
So, the correct answer is 'oxygen'.

Multiple choice biology digestion and absorption digestive system- glands mouth and buccal cavity digestive glands

Cystic artery supplies blood to

  1. Kidney

  2. Heart

  3. Gall bladder

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The common hepatic artery further bifurcates into the left and right hepatic arteries to deliver blood the left and right sides of the liver. As the right hepatic artery approaches the gallbladder, it branches off to form the cystic artery, which supplies the gallbladder and cystic duct with oxygenated blood. Hence, the cystic artery supplies blood to the gall bladder.

So, the correct answer is 'gall bladder'.
Multiple choice biology digestion and absorption digestive system- glands mouth and buccal cavity digestive glands

Before the blood carrying the products of digested food, returns to heart, it first passes through capillary network in the 

  1. Liver

  2. Kidneys

  3. Brain

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

Blood is carried to the liver via two large vessels: the hepatic artery carries oxygen-rich blood from the aorta, and the portal vein carries blood containing digested food from the small intestine. The hepatic portal vein is a blood vessel that conducts blood from the gastrointestinal tract and spleen to the liver. This blood is rich in nutrients that have been extracted from food, and the liver processes these nutrients; it also filters toxins that may have been ingested with the food. The liver receives about 75% of its blood through the hepatic portal vein, with the remainder coming from the hepatic artery proper. The blood leaves the liver to the heart in the hepatic veins.

Multiple choice biology digestion and absorption digestive system- glands mouth and buccal cavity digestive glands

The exchange of materials between the blood and the interstitial fluid occurs only in the

  1. Veins

  2. Capillaries

  3. Arteries

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

Capillaries are essential for the delivery of oxygen to the tissues and the exchange of nutrients between blood and interstitial fluid surrounding the cells. This function is well supported by the anatomy of the vessels. The thin walls of the capillaries are composed of a single layer of endothelial cells. As a result, gasses such as oxygen and carbon dioxide can diffuse through their walls, as can lipid soluble substances.
Capillaries also play an important role in regulating the relative volume of the blood and interstitial fluid by allowing a bulk flow through their walls. This exchange of water and solutes occurs in response to the pressure gradient across the capillary wall.
Therefore, the correct answer is option B.

Multiple choice zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

It opens into right auricle in frog heart Coronary sinus _______________.

  1. Drains impure blood from pulmonary veins to left auricle

  2. Receives impure blood from heart musculature via coronary veins

  3. Drains pure blood in right auricle

  4. More than one options are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

The venous system of frog differs from that of a mammals in the presence of

  1. Renal portal system

  2. Hepatic portal system

  3. Three superior venacava

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

The renal portal system is involved in the function to move blood from the renal glomeruli to the peritubular plexus that surround the proximal and distal convoluted tubules. The renal portal system is found only in fishes, amphibians, reptiles and birds. Thus, mammals have no renal portal system. 

So, the correct answer is option A.