What is the structure of the tympanic membrane?
The tympanic membrane, commonly called the eardrum, separates the middle and outer ears. This structure is slightly oval and is around 10 mm in diameter in the superior-inferior dimension. It is approximately 9 mm in diameter in the anterior-posterior dimension. The perimeter of the membrane is a fibrocartilaginous ring that fits into a groove in the temporal bone that is called the tympanic sulcus.
The tympanic membrane is composed of three layers of tissue: the outer, intermediate, and inner layers. The outer (cuticular) layer is continuous with the epithelial lining of the external auditory meatus (EAM) and the pinna. The intermediate (fibrous) layer is composed of a superficial layer of fiber and a deep layer of fiber. The inner (mucous) layer is continuous with the mucosa of the middle ear.
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A) "Please lie on your back, draw your knees upward, and spread your legs apart." B) "I am going to place you on your left side with your legs up until the baby's head is visible." C) "Please lie back, and then elevate both legs into the air. Your husband will help you hold them up." D) "I'd like you to lie flat on the bed and bend your right leg while keeping your left leg straight."
The first stage of wound healing is:
A) hemostasis. B) neovascularization. C) inflammation. D) epithelialization.