Chapter 6 The Skeletal System
Regulatory functions of the skeletal system incoude
Maintaining the normal concentrations of the calcium and phosphate ions in body fluids
The vertebral column contains _________ lumbar vertebrae
5
The vertebral column contains ________ cervical vertebrae
7
A movement away from the longitudinal axis of the body in the frontal plane is
Abduction
A movement toward the longitudinal axis of the body in the frontal plane is termed
Adduction
The presence of __________ strongly indicates that the long bone is still growing
An epiphyseal plate
When one closes the mouth, the movement is called
Elevation
The medullary cavity of a long bone is lined with
Endosteum
Typical movements at a hinge joint include
Extension and flexion
Ribs that have no connection to the sternum are called
Floating ribs
Found outside or inside a joint capsule, structure that join bone to bone are called
Ligaments
The paranasal sinuses function in
Lightening the skull and providing an extensive area of mucous epithelium
Fibrous cartilage discs that act as shock absorbers in joints are called
Menisci
The bones that form the palms of the hands are the
Metacarpals
Bone forming cells are called
Osteoblasts
The connective tissue covering the outer surface of a bone is the
Periosteum
In anatomical position, when the palm is moved to face posteriorly, the movement of the wrist and hand called
Pronation
Which of the following is an example of the skeletal systems' primary function of providing structural support?
Individual bones provide a framework for the attachment of the soft tissue and organs
Compared with the male pelvis, the female pelvis has a
Narrower pubic angle
The point of attachment for muscles that extend and rotate the head is the
Odontoid process
Which of the following primary functions of the sketletal system applies to the role of bone marrow?
Blood cell production
Red bone marrow function in the formation of...
Blood cells
What is defined as a small packet of connective tissue containing synovial fluid, which reduces friction in a joint and acts a a shock absorber
Bursa
The process of depositing calcium salts into a tissue other than bone is called
Calcification
The atlas is classified as a ______ vertebrae
Cervical
Moving the arm in a loop is an example of which angular movement
Circumduction
The bony compact that supports the brain is called the
Cranium
The shaft of the long bone is called the
Diaphysis
The fibula
Provides lateral stability to the ankle
Choose the distinctive feature of lumbar vertebrae
Relatively, massive, stumpy, spinous process that projects posteriorly
Which of the following is part of the axial skeleton
Ribs
Tarsal bones are classified as _____ bones
Short
The _________ joint is the most frequently dislocated joint if the body as it provides an excellent demonstration of the principle that stability must be sacrificed to obtained mobility
Shoulder
Which joint permits the greatest range of motion of any joint in the body
Shoulder
The vertebral arches contribute structurally to surround and protect the
Spinal cord
Why is the elbow joint considered to be extremely stable
The bony surfaces of the humerus and ulna interlock
Which of the following is part of the appendicular skeleton
The scapula
Spongy bone is made of network of bony rods or plates called
Trabeculae
Which of the following is most likely to be damaged during CPR
Xiphoid process
The patella
Glides over the smooth anterior surface, between the lateral and medial condyles
A joint with flattened or slightly curved articulating surfaces is called a _______ joint
Gliding
A twisting motion of the foot that turns the sole inward is termed
Inversion
Immature, active bone cells that produce new bone matrix are termed
Osteoblasts
Bone cells capable of dissolving of bony matrix are termed
Osteoclasts
