Self Studies
Self Studies
Self Studies
Self Studies

Digestion and Absorption Test - 67

Result Self Studies

Digestion and Absorption Test - 67
  • 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
    Which of the following is not a modification of mucosa of alimentary canal?
    Solution
    Bruner's glands are compound tubular sub-mucosal glands found in the portion of the duodenum which is above the hepato-pancreatic sphincter. The main functions of this gland is to produce a mucous rich alkaline secretion in order to protect the duodenum from acidic content of chyme, lubricate the intestinal walls, provide an alkaline condition for the intestinal enzymes to be active, thus enabling absorption. Hence, Bruner's glands are present in the submucosa of the alimentary canal and they are not a modification of mucosa of the alimentary canal.
    So, the correct answer is 'Bruner's glands'.
  • Question 2
    1 / -0
    Ileum is characterised by the presence of
    Solution
    The small intestine is divided into 3 sections, namely duodenum, jejunum and ileum. Ilelum is the last section of small intestine. It absorbs vitamin B12, bile salts, and substances that are not absorbed by the jejunum. The wall of the ileum consists of many folds. Each fold has many finger-like papillary luminal projections called as villi on its surface. These villi increases the survae area of the intestine more easy absorption. The ileum is also characterized by the presence of Peyer's patches. These are small masses of lymphatic tissue. They monitor the population of intestinal bacteria and also prevent the growth of pathogenic bacteria in the intestines. Brunner's gland is present in the duodenum.
    So, the correct answer is 'Peyer's patches and villi.'
  • Question 3
    1 / -0
    In the wall of ileum the absorption of liquids takes place through ___
    Solution
    The Ileum is a part of the small intestine. The ileum is the third and final part of the small intestine. It follows the jejunum and ends at the ileocecal junction,  In humans, the ileum, which is the last and longest part of the small intestine, is where vitamin B12 is absorbed. Also, bile salts are reabsorbed here and sent back to the liver.
    The surface area of the ileum is very large to facilitate the adsorption and absorption process. The surface consists of many tiny finger-like segments that protrude outwards. These are termed villi and are covered with epithelial cells. The villi contain large numbers of capillaries that take the amino acids and glucose produced by digestion to the hepatic portal vein and the liver. Lacteals are small lymph vessels and are present in villi. They absorb fatty acid and glycerol, the products of fat digestion.
    So the answer is 'Lymph vessels'. 
  • Question 4
    1 / -0
    Which of the following portion of intestine is blind sac?
    Solution
    The caecum is an intraperitoneal pouch which is considered to be the beginning of the large intestine. It receives chyme from ileum and connects to the ascending colon of the large intestine. The caecum is called blind sac because caecum looks like a sac which has sphincter at the ileocaecal junction and it remains closed and is invisible. Hence, it is called a blind sac.
    So, the correct answer is 'Caecum'.
  • Question 5
    1 / -0
    What will be the primary adverse effect observed if our globlet cells become nonfunctional due to some reason?
    Solution
    Globlet cells are column-shaped cells found in the epithelial lining of respiratory and intestinal tracts. Their main function is to , which produces mucin, an important component of mucus. It secretes mucus in order to protect the mucous membranes. If the globlet cells become non functional due to some reason, it will affect the smooth movement of the food down the intestine. It will also clog the airway. Gastric juices are made up of enzymes and hydrochloric acid. The mucus present in gastric juices protect the lining of the stomach from the acidic environment. If the globlet cells are non function, the digestion of proteins in stomach by gastric juices will be totally inhibited.
    Thus, the correct answer is 'Digestion of proteins in stomach is totally inhibited.'
  • Question 6
    1 / -0
    Select the incorrect match
    Solution
    All the above options are correct.So, the correct option is 'None of the above'.
  • Question 7
    1 / -0
    (A) Teeth and tongue with help of saliva masticate and mixed up the food thoroughly.
    (B) Mucus in saliva helps in lubricating and adhering the masticated food particles into chyme.
    (C) Mucus and bicarbonate present in gastric juice play an important role in lubrication and protection from excoriation by highly concentrated HCl.
    (D) The function of bile is emulsification of fat and activation of lipase.
    How many sentences given above are true?
    Solution
    • During the mastication process, the food is positioned by the cheek and tongue between the teeth for grinding. As chewing continues, the food is made softer and warmer, and the enzymes in saliva begin to break down carbohydrates in the food. After chewing, the food (now called a bolus) is swallowed.
    • The salivary glands produce two different types of secretions: thin, watery saliva and thick mucus. This mucus is an excellent lubricant and makes swallowing food easier.
    • Secretion of bicarbonate into the adherent layer of mucus gel creates a pH gradient with a near-neutral pH at the epithelial surfaces in the stomach and duodenum, providing the first line of mucosal protection against luminal acid.
    • Bile contains bile acids, which are critical for digestion and absorption of fats and fat-soluble vitamins in the small intestine. The function of bile is to bring ingested fats into the emulsion to facilitate the work of the lipases.
    So, the correct answer is 'Four'.
  • Question 8
    1 / -0
    Sub-mucosal layer of stomach consists of
    Solution
    • Sub-mucosa is a dense, irregular layer of connective tissue which consists of large blood vessels, lymphatic vessels, and nerves that support the mucosa.
    • The submucosa lies under the mucosa and consists of fibrous connective tissue, separating the mucosa from the muscularis externa layer.
    • So, the correct answer is 'Nerves, blood vessels, and lymphatic vessels'.
  • Question 9
    1 / -0
    Single-layer of flattened cells with boundaries is observed in all of the following except
    Solution
    Single layered of flattened cells with irregular boundaries constitute the squamous epithelium which is found in walls of blood vessels and air sacs of lungs. The epithelium that lines the oesophagus is stratified epithelium.
    So, the correct option is 'lining of the oesophagus'.
  • Question 10
    1 / -0
    What is correct about microvilli?
    Solution
    1. Brush bordered epithelium is microvilli covered Epithelial surface found in the body.
    2. The columnar and cuboidal epithelium of small intestine and PCT have the surface covered with microvilli for increasing absorption.
    3. Cilia are meant for the movement of fluid while microvilli function to increase the absorption and secretion.
    4. Microvilli are microscopic cellular membrane protrusions that increase the surface area for diffusion and are involved in a wide variety of functions, including absorption, secretion, cellular adhesion, and mechanotransduction.
    So, the correct option is 'Increase absorption of food.
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