NURS 203 Chapter Notes - Chapter 15: Ciliary Muscle, Lacrimal Gland, Lacrimal Apparatus
Document Summary
Jarvis: physical examination & health assessment, 2nd canadian. This section discusses key points about the structure and function of the eyes. The external anatomy of the eye includes many structures. Each eye is protected by the bony orbital cavity, surrounded with a cushion of fat. o o o o. The eyelids further protect the eye from injury, strong light, and dust. The upper eyelid is larger and more mobile. Eyelashes curve outward from the lid margin to filter out dust and dirt. The canthus is the corner of the eye, where the lids meet. The caruncle (a small fleshy mass containing sebaceous glands) is located at the inner canthus. A stripe of connective tissue, the tarsal plate, gives shape to the upper lid. The tarsal plates contain meibomian glands, which secrete an oily lubricant onto the lids. The conjunctiva, a thin mucous membrane, is a transparent protective covering of the exposed part of the eye.
