Write the important roles of the following: person (b) Gastric juice (d) Small intestine (19 A & B old true. tine. ne. (a) Rectum (c) Epiglottis (e) Tongue
The rectum is the final part of the large intestine. Its main role is to store feces (waste material) before it is eliminated from the body through the anus.
(b) Gastric juice:
Gastric juice is a digestive fluid produced by the stomach. It contains hydrochloric acid, enzymes, and mucus. Its important roles include:
Breaking down proteins into smaller molecules through the action of the enzyme pepsin.
Killing bacteria and other pathogens that may be present in food.
Providing an acidic environment for the activation of enzymes and digestion.
(c) Epiglottis:
The epiglottis is a flap-like structure located at the base of the tongue. Its main role is to prevent food and liquid from entering the trachea (windpipe) during swallowing. It covers the opening of the windpipe and directs food and liquid towards the esophagus.
(d) Small intestine:
The small intestine is a long tube-like organ in the digestive system. It plays several important roles in digestion and nutrient absorption, including:
Breaking down food further using enzymes produced by the pancreas and intestinal cells.
Absorbing nutrients, such as carbohydrates, proteins, fats, vitamins, and minerals, into the bloodstream.
Providing a large surface area for absorption through its specialized structures called villi and microvilli.
(e) Tongue:
The tongue is a muscular organ located in the mouth. It performs various important functions, including:
Aiding in the chewing and swallowing of food.
Detecting taste through taste buds located on its surface.
Assisting in the formation of speech sounds.
Pushing food towards the back of the mouth during swallowing
Answers & Comments
Answer:
Explanation
) Rectum:
The rectum is the final part of the large intestine. Its main role is to store feces (waste material) before it is eliminated from the body through the anus.
(b) Gastric juice:
Gastric juice is a digestive fluid produced by the stomach. It contains hydrochloric acid, enzymes, and mucus. Its important roles include:
Breaking down proteins into smaller molecules through the action of the enzyme pepsin.
Killing bacteria and other pathogens that may be present in food.
Providing an acidic environment for the activation of enzymes and digestion.
(c) Epiglottis:
The epiglottis is a flap-like structure located at the base of the tongue. Its main role is to prevent food and liquid from entering the trachea (windpipe) during swallowing. It covers the opening of the windpipe and directs food and liquid towards the esophagus.
(d) Small intestine:
The small intestine is a long tube-like organ in the digestive system. It plays several important roles in digestion and nutrient absorption, including:
Breaking down food further using enzymes produced by the pancreas and intestinal cells.
Absorbing nutrients, such as carbohydrates, proteins, fats, vitamins, and minerals, into the bloodstream.
Providing a large surface area for absorption through its specialized structures called villi and microvilli.
(e) Tongue:
The tongue is a muscular organ located in the mouth. It performs various important functions, including:
Aiding in the chewing and swallowing of food.
Detecting taste through taste buds located on its surface.
Assisting in the formation of speech sounds.
Pushing food towards the back of the mouth during swallowing