Skeletal muscle is made up of muscle fibers.
- Subject:
- Science
- Provider:
- Utah Education Network
- Provider Set:
- Animations and Images 2011 Collection
- Author:
- Visual Learning Company
- Date Added:
- 08/18/2011
Skeletal muscle is made up of muscle fibers.
Muscle fibers are made of myofibrils which are small cylinder-shaped structures. Myofibrils are made up of tiny filaments. Some of these filaments are thin and others are thick.
Osteoblasts make new bone cells called osteocytes. In some types of bones osteocytes are arranged in circular patterns around a common cavity called the Haversian canal.
Bones are covered by a tough membrane called periosteum. Its primary goal is to make new bone for growth and repairs. Small blood vessels branch through the periosteum to move nutrient-rich blood to reach deeper into the bone.
The outer layer of skin, the epidermis, consists of tightly packed epithelial cells that form a layer only about as thick as a piece of paper. The dermis lies below the epidermis and consists of thick layer of connective tissue.
Cinder cone volcanoes are the result of smaller fountain-like eruptions that cause a cone to form.