The Skeletal System Flashcards
How many bones are there in the human body?
206
Two minerals stored in the bone
Calcium
Phosphorus
Three parts of the axial skeleton
Skull
Vertebral column
Bony thorax
The pelvis is classified as _ based on location
Appendicular
Based on shape, carpals and tarsals are classified as:
Short bones
Classify ribs according to shape and location
Flat bones
Axial
Part of the long bone in between the epiphysis and diaphysis
Metaphysis
What covers the external surface of the epiphyses that decreases friction at joint surfaces?
Articular cartilage
The medullary cavity of long bones contains _ in infants
Red marrow
Most widely distributed type of connective tissue fiber
Collagen
Three connective tissue fiber types in the body
Collagenous fiber
Elastic fiber
Reticular fiber
What are the three types of cartilage? Which one is the most widely distributed?
Hyaline - most widely distributed
Elastic
Fibrous
On the 3rd week of life, the embryo is divided into these three layers:
Ectoderm
Mesoderm
Endoderm
Two types of cartilagenous joints
Primary / Synchondrosis / Hyaline
Secondary / Symphysis / Fibrocartilage
Cardiac muscles are derived from this germ layer
Splanchnic mesoderm
Match the types of joints based on mobility with their corresponding connecting medium
Synarthroses: Fibrous joints
Amphiarthroses: Cartilagenous joints
Diarthroses: Synovial joints
Based on shape, sternoclavicular and acromioclavicular joints are classified as
Plane
Based on shape, elbow, knee, and ankle joints are classified as
Hinge joints / Ginglymus
Based on shape, the atlantoaxial and radioulnar joints are classified as
Pivot / Trochoid
Based on shape, metacarpophalangeal joints are classified as
Condyloid
Based on shape, wrist joints are classified as
Ellipsoidal
Based on shape, carpometacarpal joints are classified as
Saddle
Shoulder and hip joints are ball-and-socket joints. This joint type is also known as:
Enarthrosis
