Bone Structure
What is the functional unit of compact bone?
Osteon
What are the 2 forms of ossification?
Endochondral and intramembranous
List 3 functions of skeletal muscles.
Producing movement
Maintaining posture and body
position
Supporting soft tissues
Guarding body entrances and
exits
Maintaining body temperature
Storing nutrients
What does a sulcus look like?
A narrow groove
What are the 4 types of bone cells?
Osteogenic cells
Osteoblasts
Osteocytes
Osteoclasts
The primary ossification center develops inside ______ cartilage.
Hyaline
What are the 3 layers of muscle?
Epimysium, Perimysium, and Endomysium
Name one example of a foramen in the skull.
Ex. Foramen magnum
Which type of bone contains trabeculae?
Spongy bone
What is appositional growth?
growth in width
What transmits action potentials from the sarcolemma into the cell interior?
The transverse tubules
What are C1 and C2 known as?
Atlas and axis
What is the incomplete cellular layer that lines the medullary cavity?
Endosteum
Name two bones that form due to intramembranous ossification
1. Mandible
2. Clavicle
Which protein does calcium bind to in the sarcomere?
Troponin
What are the 3 auditory ossicles?
Malleus, incus, and stapes
What are canaliculi?
Narrow passageways that allow for exchange of
nutrients, wastes, and gases
Secondary ossification occurs in the _________ of the bone.
Epiphysis
Which protein keeps filaments in proper alignment?
Titin
Acromial end