Iris, ciliary muscles, suspensory ligaments and elasticity of lens.

Suspensory ligaments are found in

The eye rotates in the orbit by (a) Four rectus and two oblique muscles (b) Ciliary muscles (c) Suspensory ligaments and ciliary muscles (d) Three circular and four ob lique muscles

Suspensory ligament is highly tensed when ,

Due to gradual weakening of ciliary muscles and diminishing flexibility of the eye lens, a certain defect of vision arises. Write the name of this defect. Name the type of lens required by such persons to improve the vision. Explain the structure and function of such a lens.

Contraction in suspensory ligaments represents:-

State the main function Suspensory ligament of the eye.

Ciliary muscles , choroid , fovea , gustatory cells

If the circular ciliary muscles of the eye are unable to contract, the

Read of following statements regarding different types of animal tissues and select the incorrect ones. (i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium (ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large bloood vessels (iii) Columnar epithelium present in gastric glands, intestinal glands, intestinal glands and pancreatic lubules, has a secretory role and is called as glandular epithelium (iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels.