 Which
organ systems do you think
are most necessary for the horse
to create bodily movement?
I
can identify the
structures and
functions of the
skeletal system.
Provides a framework for the body and
protects internal organs.
 In combination with the muscular system
provides for bodily motion.
 Stores minerals, primarily calcium and
phosphorus, and the bone marrow is the
site of blood cell formation.
 In mammals the system consists of bones,
cartilage, teeth, and joints.

Composed of calcium and small
amounts of other minerals.
 They are living structures that grow and
are able of repairing themselves if
damaged.
 Animal nutrition is vital to bone health.
 Bones are classified by shape as long,
short, flat, and irregular.

Long
bones are
cylindrical in shape. They
are found in the limbs
and typically support
body weight and act as
levers.
Short
bones are nearly
equal in length and width.
Short bones are found in
the knee and hock and
help to absorb the shock of
impact.
 Flat
bones are typically thinner
than most other bones.
 Flat bones such as the ribs,
scapula, and some bones in
the skull, surround and protect
vital organs.
Irregular
bones have a
variety of shapes and sizes.
Vertebrae and some bones
in the skull are examples of
irregular bones.
A
joint, or articulation, is the union
of bone or cartilage.
 Joints are classified as fibrous,
cartilaginous, or synovial.
 The classification of joints is based
on joint structure and movability.
 Include
those united by
connective tissue or fused
bone.
 Fibrous joints typically do not
permit any type of movement
and include the bones of the
skull.
Those
that include a pad of
cartilage that divide and
cushion vertebrae and
allow only slight movement.
 Freely
movable joints in which
the bones are held together
at the joints by ligaments.
 Types of synovial joints include
ball-and-socket, hinge, pivot,
and gliding.