Lesson 8.2 - The Skeletal System Flashcards
3 Types of Skeletal System
Exoskeleton, Endoskeleton, Hydrostatic Skeleton
An _______________ is found mostly in vertebrates. It is characterized by having skeletal structure inside the body. It is closely related to the muscular system.
Endoskeleton
the protective covering of the hardened material outside the body. It is primarily for protection
Exoskeleton
A _____________ is found in soft-bodied organisms. It relies on the pressure of water to move the animals.
hydrostatic skeleton
Skeletal system acts as ____________ of the body. Works with the muscular system to aid in movement
framework
__________ is the muscle that does not move.
Origin
__________is the muscle that is moved
Insertion
Skeletal system provides the body with __________ and it protects some organs.
structure
Skeletal system serves as a storage site for ___________. While, bones are sites for _____________.
minerals, hematopoiesis
4 types of bones
Long, short, flat, irregular
are longer than wide. These consist of: Yellow marrow and Red marrow
Long bones
has a fatty connective tissue.
Yellow marrow
is an important site for blood cell production.
Red marrow
are boxed shaped bones. Examples are carpals and capitate.
Short bones
have a broad surface. Examples are sternum and ribs
Flat bones
are those that do not fit in any of the other categories. These include the vertebrae.
Irregular bones
2 Divisions of the Skeletal System
Axial skeleton, appendicular skeleton
The ________________ forms the axis of the body. Its bones include: Skull, vertebral column, ribs, and sternum.
axial skeleton
includes the bones of the upper and lower limbs. It includes: Pectoral girdle, forelimb, pelvic girdle, hindlimb.
Appendicular skeleton
3 types of joints
Immovable or fibrous joints, Slightly movable joints, Freely movable
joints are found between flat bones.
Immovable or fibrous
joints are found between each of the vertebrae.
Slightly movable
joints are important in movement.
Freely movable
4 types of movable joints
Hinge joints, ball and socket joint, pivot joint, gliding joint
allow the motion of one plane of axis.
Hinge joints
allows a wide range of motion and rotation.
Ball and socket joint
allow the rotation of one joint based on where it is attached.
Pivot joint
are where flat bones meet.
Gliding joints
