Ch. 19 The Skeleton Flashcards
How many bones is the is the human skeleton composed of?
206 bones
What are the two divisions of the skeletal framework?
The axial skeleton and the appendicular skeleton
How many bones make up the cranium?
8 bones
How many bones make up the face?
14 bones
What is the only moveable joint located near the skull and where is it located?
The temporomandibular joint. It is located between the lower jaw and the temporal bone.
What makes up the axial skeleton?
The Skull and the Vertebrae
How many bones make up the spinal column?
26 Vertebrae
How many vertebrae make up the cervical section?
C1 - C7; 7
How many vertebrae make up the Thoracic section?
T1 - T12; 12
How many bones make up the Sacrum?
5 fused bones
How many bones make up the coccyx?
4-5 fused bones
Acetabulum
the bony socket in the hip bone that holds the head of the femur
Articulation
A joint
Atlas
the first cervical vertebrae
Axis
the second cervical vertebrae
Bone
A calcified form of dense connective tissue; osseous tissue; also and individual unit of the skeleton made of such tissue
Bone Marrow
The soft material that fills bone cavities. Yellow marrow fills the central cavity of the long bones; blood cells are formed in red bone marrow which is located in spongy bone tisse
Bursa
A fluid filled sac that reduces friction near a joint
Cartilage
A type of dense connective tissue that is found in the skeleton, larynx, trachea, and bronchi
Diarthrosis
A freely moveable joint; also called synovial fluid
Diaphysis
The shaft of a long bone
Epiphyseal Plate
The growth region of a long bone; located in the metaphysis, between the diaphysis and the epiphysis.
Epiphysis
the irregular shaped end of a long bone
ilium
the large, flared, superior portion of the pelvic bone
Joint
the junction between two bones; articulation
Ligament
a strong band of connective tissue that joins one bone to another
metaphysis
the region of long bone between the diaphysis (shaft) and epiphysis (end); during development, the growing region of a long bone
Ossification
the formation of bone tissue
Osteoblast
a cell that produces bone tissue
Osteoclast
a cell that destroys bone tissue
Osteocyte
a mature bone cell that nourishes and maintains bone tissue
Pelvis
the large ring of bone at the inferior trunk.
Periosteum
the fibrous membrane that covers a bone’s surface
Skeleton
the body’s bony framework, consisting of 206 bones.
What does the axial skeletal portion composed of?
80 bones; Skull, Spinal Column, Ribs, and Sternum
What does the appendicular skeletal portion composed of?
126 bones; contains bones of the arms legs, shoulder girdle and pelvis
Suture
an immovable joint, such as the joints between the skull bones
Symphysis
a slightly movable
Synovial Fluid
the fluid contained in a freely movable
Tendon
a fibrous band of connective tissue that attaches a muscle to a bone
thorax
the upper part of the trunk between the neck and the abdomen; formed by 12 pairs of ribs and sternum
