The Skletal System Ch.6 Flashcards
True or false
Cartilage has a flexible matrix that can accommodate mitosis of contra sites. This makes it an excellent scaffolding tissue upon which to build a bone?
True
True or false
The three types of cartlidge are hyaline elastic and fibroblastic?
False
Fibrocartilage
True or false
The most abundant type of cartilage in the human body is is cartilage?
False
Hyaline
True or false
The embryonic skeleton is comprised mostly of hyaline cartridge?
True
True or false
Cartilage is highly vascularized and innervated?
False
Not vascularized or innervated
List of four classifications of bone by shape and given example
1) long bones— femur
2) short bones— wrist, or ankle bones
3) irregular— pelvic girdle
4) flat— sternum
List the seven functions of the skeletal system
Protection
Support
Movement
Storage of minerals and growth factors
Storage of fat (energy)
Production of hormones
Production of blood cells
Label the following structure
Label the following structure
Label the following structure
Osteogenic cells
Miotically, active stem cells found in the periosteum and endosteum give rise to other types of bone cells
Osteoblasts
Bone forming cells at secrete the bone matrix
Osteocytes
Mature bone cells that reside in the lacunae of osteons; serve to monitor and maintain the bone matrix
Bone lining cells
Flat cells found on bone services were bone remodeling is not going on; believe to help maintain matrix and support bone
Osteoclasts
Giant multinucleate cells responsible for bone absorption; derived from the same hematopoietic stem cells that become macrophages.
Chondrocytes
Mature cells found within lacunae of cartilage; serve to maintain the tissue
Label the following structure
Label the following structure.
What three components make a bone (hint: two organic and one organic)
1) cells —osteocytes, etc
2) osteoid — Bone matrix; comprise about 1/3 of bone -include ground substance and collagen fibers
3) mineral salts (hydroxyapatite’s) — in organic part of bone; comprises 2/3 of bone, primarily calcium phosphate crystals
True or false
Hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones
True