Upload
merryl-heath
View
215
Download
0
Tags:
Embed Size (px)
Citation preview
TYPES OF HUMAN BODY CELLS
Bone cells (Osteocytes) They are the toughest body Cell as they are bound together by calcium and phosphate. As you knows they give strength, support and frame-work to the body by enclosing organs in skeletal system i.e bones
BONE CELLS (OSTEOCYTES
Cartilage cells (chondrocytes)– These cells are similar to bone cells but the surrounding material is just loose and flexible compared to those of bone cells. Hence they are freely bendable. They are present in ear bone (hence ears are fold-able), in between large bones to help them bend and move freely like in between two ribs, spinal bones, joints etc.
CARTILAGE CELLS (CHONDROCYTES)
Epithelial cell: These cells are very simple cells which form covering of other cells. These cells form covering layers of all the organs and hence are preset in skin, scalp, respiratory tract, in the buccal cavity surface etc. Ex: Skin cells, mucous cells.
EPITHELIAL CELL:
Muscle cells: These cells are of muscle tissue mostly long, large and have ability to contract and relax providing movements. They are three types as skeletal, cardiac and smooth muscles.
MUSCLE CELLS
Secretory cell: These cells as name indicates are secretory in nature. They form glands and secrete something important ex; pancreatic cells which secrete insulin, glucagon, salivary gland secrete salivary amylase, sebaceous gland secrete oil on the skin etc.They are found in all secretory organs
SECRETORY CELL:
Adipose cells: These are fat cells and are storage in nature to store fat. Especially seen in the soles, palms, bums etc. They reduce friction to the body.
ADIPOSE CELLS
Blood cells: These cells include RBC’s, WBC, Thormbocytes etc. They are always motile and never stay in one place. They have limited life span and they never multiply to form new cells. instead new cells are formed from other cells.
BLOOD CELLS
Sperms: These cells unlike others are haploid (i.e. have only one set of chromosome). They are present only in the males after puberty. These cells have a tail which enables them to swim and move in the female uterus
SPERM
Oocytes: Cells are haploid and present in adult female genital system. They are also haploid like sperms. They start to form after puberty and continue so till the stage of menopause. They accept sperm cells to form zygote (fertilized egg). This further grows in the uterus to form a baby
OOCYTES ( EGGS)
Stem cells: These are basic cells or parent cells which can differentiate into any cell based on the requirement. These stem cells in human body are given so importance due to their promising role in treatment of disorders in future
STEM CELLS
Rods & cones: These cells are in eye and have capacity to capture image color and light.
RODS & CONES
Ciliated cells: These cells are present as lining of respiratory tract, esophagus etc. and have a pointed thread like cilia which move in one particular direction to pass material.
CILIATED CELLS
Neurons : These cells are very long and have many branching at either ends. Their specialty is they never multiply in one’s life time. They are present all over the body and are sometimes as long as few meters long. They are human brain cells and are found in plenty in brain and the spinal cord and form the nervous tissue.
NEURONS