Author: Smriti Kanchan
-
Class 9th – Tissues in Animals
Tissues are a group of similar cells that perform similar functions. When are talking about animal tissues it can be classified as: Please click on the following types of tissues to reach related detailed posts: Epithelial Tissue Connective Tissue (Blood & Bone) Muscular Tissue Nervous Tissue
-
Class 9th – Nervous tissue
The nervous tissue comprises of brain, spinal cord and nerves. Structural and functional unit of nervous system is NEURON. Cells of nervous tissue are highly specialized for stimulation. It is responsible for coordinating and controlling. NEURONS A neuron consists of cell body, nucleus within the cell body and cytoplasm. The long part of neuron is…
-
Class 9th – MUSCULAR TISSUE
Muscular tissue consists of elongated cells which are called MUSCLE FIBRES. Muscles contain special Protein called contractile proteins. The contractile proteins are Actin and Myosin. The role of contractile protein is contraction and relaxation and thus helps in Movement. STRIATED MUSCLES They are voluntary in nature. I.e. they move according to our will. So also…
-
Class 9th – Connective Tissue – Bone
BONE Bone is a connective tissue. It forms the framework that supports the whole body. It also anchors the different muscles and supports all the main organs of the body. It is a strong and non-flexible tissue. Matrix: hard matrix and is composed of calcium and phosphorus compounds. It consists of Tendon Ligament Cartilage…
-
Class – 9th : Connective Tissue – Blood
FLUID MATRIX: PLASMA FUNCTIONS OF BLOOD: Blood flows and transports: Gases Digested food Hormones Waste materials to different parts of the body. Blood carries oxygen as oxyhaemoglobin with the help of RBC.