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Skeletal System

Skeletal System Quiz 3

QuestionAnswer
Number of bones in the human body 206
Funtions of Skeletal System Support, Protection, Movement, Storage, Erathropoiesis
Structure of Bones - Bones are made of Collagen, Osteocytes, Salts
form of connective tissue made up of cells, fibres, and other extracellular material Bones
Mature Bone Cells, found of surface of bone Osteocytes
Immature Bone Cells Osteoblasts
67% of Bone Weight is made up of Mineral Salts
Most abundant Mineral Salts Calcium Phosphate, Calcium Carbonate
Least Abundant Mineral Salts Magnesium Hydroxide, Flouride & Sulfate
Bodys most abundant protein found in bone matrix Collagen
fills in spaces of matrix, collagent then embeds and is then crystalized and harden to make bones Mineral Salts
means porus, britle, plyable Decalcified
Communication system of the bone or tree rings Haversian System
consists of a matrix arranged in circles with a central canal Haversian System
Funtion includes allowing nourishment into osteocytes and waste removal Haversian System
smaller canals that provides for communication with osteocytes and haversian canal and radiate from the lucunae Canaculli
provides roots for tissue fluids to reach blood cells Canaculli
Canals from periostium, into haversion canal Volkmanns Canals
How many arteries supply bone marrow to each bone 1
marrow cavity is know as medeullary
rings of the Haversian System are called lamella
located between the lammella are Lucunae
Actual spaces between the lamella and lucanae are occupied by osteocytes
Joint Movements: angle at joint decreases, ex bending head forward Flexion
Joint Movements: return from flexion extension
Joint Movements: moving the part away from the midline of the body ex. moving arms out to the sides abduction
Joint Movements: moving the part toward the midline of the body, ex arms back at side adduction
Joint Movements: pivoting bone upon its axis, ex turning head side to side Rotation
Joint Movements: making a circular motion Circumduction
Joint Movements: further extension of straightening the joint to an angle greater than 180 degrees, ex bending head back as far as possible Hyperextension
Joint Movements: flexing the ankle Dorsiflexion
Joint Movements: extending the ankle Plantar flexion
movement of forarm turning the palm forward Supination
movement of forearm turning the back of the hand forward Pronation
ankle movement turning the sole of the foot forward Inversion
ankle movement turning the sole of foot outward eversion
moving a part forward protraction
pulling a part back retraction
Created by: digitaldane
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