The Skeletal System Intro
What are the two subdivisions of the human skeleton?
The axial skeleton and the appendicular skeleton
What general regions do the axial and appendicular skeleton consist of ?
The axial skeleton is composed of the skull vertebral column, and the thoracic cage. The appendicular skeleton is composed of the upper and lower limbs, and girdles.
What are the 7 skull flat bones?
frontal bone, zygomatic bone, maxilla bone, parietal bone, temporal bone, and occipital bone
what bones is your arm
humerus
what is an articulation?
where two bones attach
What are the three major functions of cartilage?
1. supporting soft tissues
2. providing gliding surface at articulations for bones
3. provides a model for the formation of bone
What is hematopoiesis?
the blood cell production in the bone marrow
What is the name for the immovable fibrous joints that form boundaries between cranial bones?
sutures
what three bones does the Os Coxae consist of?
the ilium, ischium, and pubis bones
What are the six different kinds of joints?
fibrous, cartilaginous, synovial, amphiarthriosis, and diarthrosis
What is the most abundant cartilage and where can it be found?
Hyaline cartilage and it can be found on.... the ends of the ribs, larynx, trachea, on the articulating surfaces of bones, and more
What classification of bone would a carpal of the wrist be?
short bone
Cervical has 7, thoracic has 12, lumbar has 5, sacral 5 (fused)
what bone does the glenoid cavity of scapula articulate with
the head of the humerus
What kind of joint is your shoulder giving it total free movement?
ball and socket joint
What happens during interstitial growth?
1. chondrocytes go through mitosis
2. two chondrocytes in one lacuna
3. the chondrocytes will push apart and separate from the lacuna
What lines the marrow cavity?
Endostium
What are the 3 components of the sternum?
manubrium, body, and xiphoid process
What carpal bone articulates with your radius?
Scaphoid
What disease causes inflammation of joints that is caused by a deposition of urate crystals from the blood?
Gouty arthritis
What does intramembranous ossification produce?
1. flat bones of the skull
2. facial bones and the mandible
3. the collar bone
What hormone inhibits osteoclast activity and what releases it?
Calcitonin and the thyroid gland is what releases it when stimulated
What facet on the ribs articulates with vertebral bodies?
the interarticular crest
What are two kinds of limb malformations?
polydactyly, ectrodactyly, syndactyly, amelia, phocomelia
What ligament connects (articulates) the temporal and mandibular bone?
Temporomandibular ligament