Q.35) Briefly describe striated and smooth muscles with their functions.
OR
Describe the types of connective tissues along with their functions.
Q.36) Give a brief account ofchief type oftissues in animal.
OR
(a) Differentiate between bone and cartilage.
(b)Draw a well labeled diagram of nerve cell.
(c) What is tissue ?
Answers
Answer:
..Striated muscles provide the force for locomotion and all other voluntary movements of the body. The smooth muscles are also known as unstriated or involuntary muscles. Smooth muscles occur as bundles or sheets of elongated fusiform or spindle-shaped cells or fibres. They are held together by loose connective tissue.
..Cartilage provides support and flexibility to the body parts. It smoothens the surface at joints. Bone provides shape and skeletal support to body. Bone protects vital body organs such as brain, lungs, etc
..Cartilage is thin, avascular, flexible and resistant to compressive forces. Bone is highly vascularised, and its calcified matrix makes it very strong. This topic covers the structure and function of bone and cartilage, the type of cells found in these tissues, and how bone and cartilage are formed.
..A tissue is a group of cells, in close proximity, organized to perform one or more specific functions. There are four basic tissue types defined by their morphology and function: epithelial tissue, connective tissue, muscle tissue, and nervous tissue.