Skeletal Connective tissue Flashcards
what are they types of skeletal tissue?
1.cartilage
2.bone
what is the main function of skeletal connective tissue?
it forms the endoskeleton in vertebrates
nature of cartilage
1.loosely packed cells
2.compact
3.less vascular
what is the nature of the matrix of cartilage
the matrix is hard and forms a cheese-like structure with no blood vessels present in it. they are dead
how does cartilage attain it’s flexibility?
although the cartilage is hard in nature, it has some flexibility. this accounts in the flexible nature of the cartilage
what is matrix rich in?
the matrix is rich in calcium salts which makes the it hard
who produces the matrix?
chondrocytes produce and maintain the matrix of the cartilage
how is the matrix structure in the cartilage?
1.it is a delicate network of fibers and living cells, chondrocytes
2.the chondrocytes are found in fluid filled sacs called lacunae
how is cartilage capable of rapid and continuous growth?
the chondrocytes in the matrix continuously divide and grow, resulting in this capability
why is cartilage needed in our body?
1.shapes and supports different body parts
2.smoothens the joint surfaces
3.increases flexibility
where is it found in the human body?
1.ear pinna
2.nose tip
3.at the end of long bones
4.at the end of lower ribs
5.epiglottis
6.intervertrebal discs
7.in the rings of trachea/wind pipe
what is the nature of bone?
1.porous
2.highly vascular
3.hard and rigid
4.miniralised
5.very strong and non-flexible
what is the nature of the matrix of the bone
the matrix of the bone is in the form of rings called lamella
what is the matrix of bone rich in
1.the matrix is consists of proteins like; collagen, osteocalcin etc.
2.it is rich in calcium and magnesium and carbonates and phosphates of magnesium
what are the bone cells called?
osteoblasts or osteocytes
what is the structure of the bone tissue?
1.the osteoblasts are found in fluid-filled sacs called lacunae which are located in between the lamella
2.these lacunae have canal like cytoplasmic structures called canaliculi, connected to each of the bone cells
3.each bone cell can communicate to each other through these canaliculi
4.every osteoblast receives food, oxygen and eliminates waste material through these canals.
what will happen if bones are removed from the body?
1.no endoskeleton in vertebrates
2.no shape to the body
3.no skeletal support to the body
4.body will be devoid of stores of calcium and phosphates
5.there will be no anchor to the muscles
6.no protection to the viable body organs like lungs, brain etc.
why are bones considered as specialized connective tissues?
bones are porous, mineralized, hard and rigid
