Table of Contents
Is the tissue the biggest?
The smallest unit of organization is the cell. The next largest unit is tissue; then organs, then the organ system. A tissue is a group of similar cells that perform the same function. The human body contains four basic types of tissue: muscle tissue, nervous tissue, connective tissue, and epithelial tissue.
Which is the single largest organ by mass in human body?
Skin is our largest organ—adults carry some 8 pounds (3.6 kilograms) and 22 square feet (2 square meters) of it.
Where is the largest muscle in the body located?
gluteus maximus
The largest muscle in the body is the gluteus maximus. Located at the back of the hip, it is also known as the buttocks. It is one of the three gluteal muscles: medius.
Is an organ or organelle bigger?
Organelles are the substructures (such as mitochondria and chloroplasts) inside cells that perform particular functions. They are therefore larger than cells. Organisms are made up of organs which are made up of tissues, and are therefore larger than tissues.
How much does a stomach weigh?
The average empty stomach weighs in at about 2.0 pounds. The stomach can hold up to 8.5 U.S. pints of food which would make the stomach weigh in at 11 pounds.
Which is the smooth muscle layer of the stomach?
3 smooth muscle layers of the stomach, together are called the muscularis externa. They are made up of What is the Stomach? The stomach is a hollow, muscular organ on the upper left side of the abdomen, with one entrance and one exit. One leads in from the esophagus. And the other leads out into the duodenum.
Why does the stomach hold more food than the small intestine?
You can ingest a meal far more quickly than it can be digested and absorbed by the small intestine. Thus, the stomach holds food and parses only small amounts into the small intestine at a time.
Where are smooth muscle fibers located in the body?
Smooth Muscle. Smooth muscle tissue is located in the walls of hollow structures such as blood vessels, the stomach, intestines, and the bladder. Smooth muscle fibers are usually involuntary, and they are non-striated (smooth). Smooth muscle tissue, like skeletal and cardiac muscle tissue, can undergo hypertrophy (growth).
Which is the only organ in the digestive system to have 3 muscle layers?
The stomach is the only organ in the digestive system to have three muscle layers. The rest of the gastrointestinal tract, or GI tract, contains only two muscle layers. The stomach wall is comprised of the same four layers as most of the rest of the alimentary canal, but with some differences in the mucosa.