Tag: excretory system in human

Questions Related to excretory system in human

Renal physiology was described by

evs - i excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Ludwig

  2. Krebs

  3. Walter

  4. Claude

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Correct Option: A
Explanation:

Renal physiology was described by Ludwig. Renal physiology is the study of the physiology of the kidney.

This encompasses all functions of the kidney, including reabsorption of glucose, amino acids, and other small molecules; regulation of sodium, potassium, and other electrolytes; regulation of fluid balance and blood pressure; maintenance of acid-base balance; the production of various hormones including erythropoietin, and the activation of vitamin D.

The liver is

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. A reddish brown

  2. A reddish

  3. A brown

  4. Cream coloured

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Correct Option: A
Explanation:

The liver is a large, meaty organ that sits on the right side of the belly. Weighing about 3 pounds, the liver is reddish-brown in color and feels rubbery to the touch. The liver has two large sections, called as the right and the left lobes. The gallbladder sits under the liver, along with parts of the pancreas and intestines. The liver and these organs work together to digest, absorb, and process food. 

So, the correct answer is option A.

Nephrons are related to.

evs - i excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Respiratory system

  2. Circulatory system

  3. Excretory system

  4. Integumentary system

Show answer
Correct Option: C

Certain carbonates and phosphates are removed by

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Skin

  2. Liver

  3. Kidneys

  4. None of the above

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Correct Option: D

The main excretory organs in man are

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Kidneys

  2. Nephridia

  3. Trachea

  4. Lungs

Show answer
Correct Option: A
Explanation:

Kidney is the main excretory organ in man. It helps in filtration of blood and maintains osmoregulation. Accessory organs of excretion are liver, lungs and skin. Lungs helps in excretion of carbon dioxide. Skin helps in secretion of oil, water and salts by sweat and sebaceous gland. Liver helps in excretion of bile. It also helps in formation of urea which is a major excretory product. So, the correct answer is option"kidneys."

Length of female urethra is

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. 15 cm

  2. 10 cm

  3. 4 cm

  4. 2 cm

Show answer
Correct Option: C
Explanation:

Urethra in females serves the sole purpose of excretion of urine. It extends from the base of urinary bladder to the urinary meatus hence having a length of 4 cm.

So, the correct answer is '4 cm'.

The correct sequence of urine movement is

evs - i excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Bladder --> Kidney --> Ureter -->Urethra

  2. Bladder -->Urethra -->Kidney -->Ureter

  3. Kidney -->Bladder -->Ureter --> Urethra

  4. Kidney -->Ureter -->Bladder -->Urethra

Show answer
Correct Option: D
Explanation:
Urine is formed in the kidney. The tubes which connect the kidney and urinary bladder are known as the ureter. From the kidney, urine is propelled into the urinary bladder through ureters which are made of smooth muscle fibres. The bladder stores urine, allowing urination to be infrequent and can be controlled. The urethra is a long tube which connects urinary bladder to the urinary meatus for removal of urine from the body. In males, urethra travels through the penis and meet the urethral meatus located at the tip of the penis. In females, urethra connects to the urethral meatus above the vagina. The urethra is also known as the urinary opening. So the correct sequence of urine movement is Kidney -->Ureter -->Bladder--> Urethra.
So, the correct answer is 'Kidney -->Ureter -->Bladder -->Urethra'.

Urine is excreted out of the body through

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Pelvis

  2. Ureter

  3. Urinary bladder

  4. Urethra

Show answer
Correct Option: D
Explanation:

a) Pelvis is the lower region of abdomen which houses various organs. 

b) Ureter carries urine from kidneys to urinary bladder hence, it does not excrete urine out of the body. 
c) Urinary bladder only stores the urine. 
d) Urethra carries urine from the urinary bladder to the outside of the body. 
So, the correct answer is 'Urethra'.

Which of the following does not help in excretion?

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Liver

  2. Sweat glands

  3. Pancreas

  4. Both A and B

Show answer
Correct Option: C
Explanation:
In liver the toxic ammonia is converted to urea which is filtered by kidney to form urine. Sweat glands help in excretion of excess salts and water in the form of sweat. Hence, both these organs help in excretion. Pancreas on the other hand, secrete the hormones insulin and glucagon and digestive enzymes. Hence, it has endocrine and digestive functions but not excretory functions.
So, the correct answer is 'Pancreas'.

Urinary bladder opens to the outside through

evs excretion in living organisms other systems in the body excretory system in human human excretory organs

  1. Nephron

  2. Glomerulus

  3. Ureter

  4. Urethra

Show answer
Correct Option: D
Explanation:

a) Nephrons are structures located in the kidney which help in filteration of blood to form urine. 

b) Glomerulus are a part of nephrons and are located in kidneys. 
c) Ureters carry urine from kidneys to urinary bladder. 
d) Urethra carries urine from urinary bladder to the outside.
So, the correct answer is option 'Urethra'.