Chapter #6 Skeletal System

How many bones are in the auditory ossicles?

There are six bones that make up the auditory ossicles of those six those include the malleus, incus and stapes. M.I.S.T.

What types of bones are there?

There are six types of bones: Long, short, flat, irregular, sesamoid and sutural. Larry-long Sings-short, flat-funny, irregular-interesting, sesamoid-silly, sutural-songs.

What are types of fractures?

There are six types of fractures they include open (compound), comminuted, greenstick, impacted, pott and colles. Owen-open comminuted-can greenstick-go impacted-inside play-pott colles-color.

What are trabeculae?

Trabelculae are irregular lattice work of thin plates of SPONGY BONE.

What type of fracture is an comminuted? (crumbled)

A comminuted fracture is splintered, crushed, or broken into pieces at the site of impact.

What is a (freely) movable joint?

A freely movable joint is a diathrosis. Chapter #9

What is a greenstick fracture?

A greenstick fracture is a partial fracture in which one side of the bone is broken and the other sides bends.

What type of fracture is an open (compound) fracture?

An open fracture is where the broken ends of the bone protrude through the skin.

What is articular cartilage?

Articular cartilage is hyaline cartilage attached to articular surfaces. Ex. joints between the knees, elbow and rib cage. Chapter #6 page 183

Where are compact and spongy bone found?

Compact and spongy bones are found in long bones. Compact is found in the diaphysis of the long bone and spongy is found in the epiphysis of the long bone. Chapter #7 page 211

What is hemopoiesis?

Hemopoiesis is the process of red bone marrow making red blood cells, white blood cells and platelets.

What is the acromion process?

The acromion process is the outer end of the scapula.

What are osteoblasts?

Osteoblasts "build" bone or forms bone.

What are osteoclasts?

Osteoclasts "break" down bone and resorption of the break down.

What are osteocytes and their functions?

Osteocytes are mature bone cells that maintain the daily activities of bone tissues.

What are osteons and their functions?

Osteons are the basic unit or structure of adult compact bones. They consist of the haversian canal, lamellae, lacunae osteocytes and canaliculi.

What are sutures?

Sutures are immovable fibrous joints that joins skull bones.

What bones do tear ducts pass through?

Tear ducts pass through the lacrimal and maxillary bones.

What is the percentage of weight of the human skeletal system?

The human skeletal system makes up about 18% of the weight of the human body.

What bone does the atlas articulate with?

The atlas articulates with the occipital bone.

How many bones are there in the axial skeleton?

The axial skeleton consists of 80 bones. Page 209 Chapter #7.

What are the bones in the axial skeleton?

The bones in the axial skeleton include: the skull, hyoid, auditory ossicles, vertebral column, and thorax. Chapter #7 page 209

What is a diaphysis?

The diaphysis is the long, cylindrical MAIN portion of the bone.

What is the epiphyseal plate?

The epiphysial plate or (growth plate) is a layer of hyaline cartilage in the metaphysis of a growing bone. Chapt. #6 page 192

What is the epiphysis?

The epiphysis is the proximal or distal ENDS of the bone.

Where does the ethmoid bone form supporting structure of the nasal cavity?

The ethmoid bone forms a supportive structure between the nasal cavity and the brain cavity.

How many bones are in the hyoid bone?

The hyoid bone consists of only one bone.

What is the interior and middle ear housed be petrus portion of which bone?

The interior and middle ear is housed by the temporal portion.

What is the metaphysis?

The metaphysis are the regions BETWEEN the diaphysis and the epiphysis.

What is periosteum?

The periosteum is a tough connective tissue sheath this surrounds the bone surface where IT IS not covered by articular cartilage.

Where is the pituitary gland located?

The pituitary gland is located in the middle of the base of the brain inferior to the hypothalamus.

What are the six main functions of the skeletal system?

The six main functions of the skeletal system are: Support, protection, assistance in movement, mineral homeostasis (storage and release), blood cell production (red bone marrow) and triglyceride storage (yellow bone marrow).

Skull bones which ones are paired?

The skull bones that are paired are the temporal and the parietal.

How many bones are in the skull? (consists of cranium and face).

The skull consists of the cranium which has 8 bones and the face which has 14.

How many bones make up the vertebral column?

There are 26 bones that make up the vertebral column. Chapter #7 page 209

How many bones are in the thorax?

The thorax consists of the sternum (1 bone) and the ribs which have 24 bones. 25 bones make up the thorax.

What is the xiphoid process?

The xiphoid process is the inferior, smallest portion of the sternum (breastbone).

What is the zygomatic process (temporal bone)

The zygomatic process (temporal bone) is the anterior process of the temporal bone that articulates with the zygomatic bone to form the zygomatic arch.