Tag: digestive system - organs

Questions Related to digestive system - organs

From which part of the alimentary canal does chemical digestion begins?

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Mouth

  2. Esophagus

  3. Stomach

  4. Gall bladder

  5. Small intestine

Show answer
Correct Option: A
Explanation:

Chemical digestion involves enzymes. In the mouth, chemical digestion is initiated when the food comes in contact with saliva, which is secreted by salivary glands. It contains salivary amylase which begins the digestive process by breaking down starch and converting it into maltose. Chemical digestion then further continues in stomach and then finally in the small intestine.

So, option A is the correct answer.

The chemical digestion of food starts in the

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Mouth

  2. Stomach

  3. Esophagus

  4. Small intestine

  5. Large intestine

Show answer
Correct Option: A
Explanation:

Chemical digestion food starts in the mouth as saliva is secrets from salivary gland which consists salivary amylase enzyme which acts on starch and converts it into the simpler form the churned food particles with saliva is called as the bolus then transferred to the stomach through the esophagus.

Carnivorous animals use these teeth to tear flesh.

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Incisors

  2. Canines

  3. Premolars

  4. Molars

Show answer
Correct Option: B
Explanation:

Carnivorous animals are meat eating animals. They use canines which are long, pointed teeth near the front of their jaw for tearing of flesh. Other teeth along the side of their jaw, molars and premolars, have uneven edges and are used for shearing the food in smaller pieces.

So, option B is the correct answer.

Pick out the odd one: among the parts of the alimentary canal are

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Pharynx

  2. Mouth

  3. Buccal cavity

  4. Pancreas

Show answer
Correct Option: D
Explanation:

Pancreas helps in digestion by secreting pancreatic juice in small intestine. However pancreas is a gland and is not a part of alimentary canal. Alimentary canal is a muscular tube which extends from mouth to anus and includes the mouth, pharynx, oesophagus, stomach and the intestines.

So, option D is the correct answer.

Consider the following statement regarding human.
a. Duodenum is the longest part of small intestine
b. Hepatic and cystic ducts release their secretions into common bile duct whose opening is controlled by sphincter of Oddi
c. Ileocaecal valve is present at the junction of small intestine and large intestine
d. Mechanical digestion and chemical digestion of food occurs in buccal cavity, stomach and small intestine 
Which of the following choices is correct?

biology digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. A and B only

  2. B and C only

  3. C and D only

  4. A, B, C and D

Show answer
Correct Option: C
Explanation:
a. Ileum is the longest part of small intestine.
b. Bile duct and pancreatic duct open together into the duodenum as the common hepato-pancreatic duct which is guarded by a sphincter called the sphincter of oddi.
c. Ileocaecal valve is present at the junction of small intestine and large intestine.
d. Mechanical digestion and chemical digestion of food occurs in buccal cavity, stomach and small intestine.
a and b are wrong. c and d are correct.
So, the correct answer is 'C and D only'

Schneiderian membrane is found in

bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. loop of Henle

  2. trachea

  3. Bowman's capsule

  4. nasal mucosa

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Correct Option: D
Explanation:
In anatomy, the Schneiderian membrane is  the membranous lining of the maxillary sinus cavity. The part is exposed after surgical removal of membranous layer of mucosal cavity.

So, the correct option is D. 

What is the process of food passage from buccal cavity to the side of water and mineral absorption?

bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Duodenum $\rightarrow$Stomach $\rightarrow$ Ileum $\rightarrow$ large intestine

  2. Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Stomach $\rightarrow$Duodenum $\rightarrow$ Ileum $\rightarrow$ Caecum $\rightarrow$Rectum

  3. Mouth $\rightarrow$Buccal cavity $\rightarrow$ pharynx $\rightarrow$ Larynx $\rightarrow$ Stomach $\rightarrow$ Small intestine $\rightarrow$Large intestine

  4. Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Pharynx $\rightarrow$ Food $\rightarrow$ pipe $\rightarrow$ Stomach
    $\rightarrow$ Large intestine $\rightarrow$ Small intestine

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Correct Option: A

Tongue is made up of?

bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. Smooth muscles

  2. Skeletal muscles

  3. Both (A) and (B)

  4. Cartilage

Show answer
Correct Option: C
Explanation:

Answer : 
i) The tongue is composed of skeletal muscle fibers and smooth muscle fibers. 
ii) Unlike the cardiac muscle or smooth muscle of the organs and digestive system, skeletal muscle can be willingly controlled. 
iii) This allows for the tongue's mobility. 
iv) The muscles that lace throughout the organ secure it to surrounding bones and create the floor of the oral cavity. 
v) Mucous membrane covers the skeletal muscle and protects the body from microbes and pathogens.
vi) While muscularis mucosa is composed of a layer of smooth muscle fibers.

So the correct answer is option C. Both (A) and (B).

Tongue bone is?

bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. Mandible

  2. Hyoid

  3. Flat bone

  4. Coccyx

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Correct Option: A

Coelenterates are _________.

bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. Terrestrial

  2. Aquatic

  3. Aerial

  4. All of the above

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Correct Option: B