HUMAN NUTRITION

NUTRITION

DIGESTIVE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Organs, such as the stomach and the small and large intestines, are lined with smooth muscle tissue. These organs, due to the muscular contractions of their walls (peristalsis), involuntarily:
A
grind food into smaller pieces
B
move food through the digestive tract
C
add liquids to food to make it a slurry
D
supply digestive enzymes that aid in digestion.
Explanation: 

Detailed explanation-1: -Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system.

Detailed explanation-2: -Your abdominal muscles have many important functions, from holding organs in place to supporting your body during movement. There are five main muscles: pyramidalis, rectus abdominus, external obliques, internal obliques, and transversus abdominis.

Detailed explanation-3: -Inside these hollow organs is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. The digestive tract also contains a layer of smooth muscle that helps break down food and move it along the tract.

Detailed explanation-4: -Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.

There is 1 question to complete.