Skeletal System Flashcards
The skeletal system consist of how many bones?
206
Bones form through a process called
Ossification
Human bone is composed of bone tissue, which is a dense type of
Connective tissue
Some bones also have a more flexible tissue called
Cartilage
attach muscles to bones
Tendons
attach bone to bone.
Ligaments
The five basic functions of the skeletal system are:
Protection of the organs
Storage of essential nutrients, such as calcium
Production of red and white blood cells
Facilitation of movement
Providing structure that gives the body its form and support
Red and white blood cells grow and develop in the bone marrow through a process called
hematopoiesis
the points of contact between two bones that help with articulation.
Joints
The joint types include:
Gliding
Hinge
Pivotal
Saddle
Ball and Socket
The skeletal system is divided into two major divisions:
the axial and appendicular skeletons.
allows lowering of the head
Gliding
allows forward and backward bending motions
Hinge
allows turning motions
Pivotal
allows thumb movement
Saddle
allows movement such as swinging of the arms in a circular motion
Ball and Socket
consists of the vertebral column, which consists of the lumbar, thoracic, and cervical spaces, the skull, hyoid, ribs, sternum, and the auditory ossicles.
Axial skeleton
The lower and upper limbs, pelvic girdle, and pectoral (shoulder) girdle are all a part of the
Appendicular skeleton
Bones within the skeletal systems can be classified as
long, short, flat, irregular, or sesamoid.
The ends of a bone are referred to as the
Epiphysis
The middle of a bone is known as the
Diaphysis
Humerus, radius, ulna, femur, tibia, and fibula
Long bones
Wrist and ankle bones
Short bones
Ribs, sternum, scapulae, and some skull bones
Flat bones
Vertebrae and jaw bones
Irregular bones
Patella
Sesamoid bones
