Answer:
1. Smooth muscle: Moves food through the GI tract.
2. Cardiac muscle: moves blood through the body.
3. Skin epidermis: Has a surface to which nothing is attached
4. Tendon: Derived from mesenchyme
Explanation:
1. Smooth muscle: Moves food through the GI tract.
The smooth muscle generates both tonic and forceful contractions to move the bolus of food along the gastrointestinal tract.
2. Cardiac muscle: moves blood through the body.
The cardiac muscle is also known as the myocardium, and is only found in the heart, where it produces contractions that propel the blood through the body.
3. Skin epidermis: Has a surface to which nothing is attached.
The epidermis is the most superficial layer of the skin.
4. Tendon: Derived from mesenchyme.
Tendons, along with ligaments, capsules, sheaths and fascial planes, are fibroblasts, a kind of connective tissue. Connective tissues are embryologically derived from the mesoderm, so they are often called "mesenchymal" tissues.
