Human Body Tissues - Wan Luan Lee

Wan Luan Lee
Period 3
Epithelial tissue
Connective tissue
Nervous tissue
Muscle tissue
Muscle tissue is a soft tissue that composes
muscles in animal bodies, and gives rise to muscles'
ability to contract.
Muscles have several main functions, including
locomotion, heat production, structural support
and muscle contractions.
Muscles are dense and account for nearly 40
percent of the body's weight.
There are three major types of muscle tissue
Cardiac Muscle: joined to one another by
intercalated discs which allow the synchronization
of the heart beat.
Skeletal Muscle: attached to bones by tendons, is
associated with the body's voluntary movements.
Visceral (Smooth) Muscle: controlling movements
of the body.
Connective tissue supports, connects, or
separates different types of tissues and organs
in the body.
Fibroblasts are the cells responsible for the
production of some CT.
There 3 types of connective tissue.
Bone tissue
Cartilage tissue
Hemopoietic tissue
Blood tissue
EX: Areolar: fibrous connective tissue, loosely
packed, to hold tissue layers together
Nervous tissue is made up of different types of
nerve cells, all of which have an axon.
Functions of the nervous system are sensory
input, integration, control of muscles and
glands, homeostasis, and mental activity.
The tissue located in the brain and spinal cord
consists of both gray and white matter.
The 3 Elements of Nervous Tissue
Spinal cord
Epithelial tissue covers the whole surface of the
It is made up of cells closely packed and ranged
in one or more layers.
It protects us from the outside world - skin
Absorbs – stomach and intestinal lining (gut)
Filters – the kidney
Secretes – forms glands
By cell arrangement
Simple epithelium - single layer of cells (usually for
absorption and filtration)
Stratified epithelium - stacked up cell layers
(protection from abrasion - mouth, skin.)
EX: Skin, stomach, and intestinal lining.