Determine how an upper respiratory infection can impact the ear
What will be an ideal response?
The pharyngotympanic tube connects the middle ear to the nasopharynx. The pharyngotympanic tube acts as a conduit for pathogens in the nasopharynx to reach the middle ear. The resulting inflammation causes a build-up of fluid or pus, and the tympanic membrane bulges painfully into the auditory canal and interferes with hearing.
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Which statement regarding the cornea is not true?
A. The cornea lacks blood vessels (it is avascular). B. The cornea lacks nerves (it is aneural). C. The internal corneal epithelium obtains oxygen from fluid in the anterior chamber of the eye. D. The external corneal epithelium receives nourishment from lacrimal gland secretions. E. The cornea serves to refract light rays.
Chewing is called
A) segmentation. B) pendulum movements. C) peristalsis. D) ingestion. E) mastication.
Blood in the superior vena cava will enter the ________.
A. pulmonary arteries B. pulmonary veins C. aorta D. pulmonary trunk E. right atrium
The origin is the point of muscle attachment that is most stationary.
Answer the following statement true (T) or false (F)