The function of tears produced by the lacrimal apparatus is to: (a) keep conjunctival surfaces moist and clean. (b) reduce friction and remove debris from the eye. (c) provide nutrients and oxygen to the conjunctival epithelium. (d) a, b, and c are correct.
Added by Luz H.
Step 1
Step 1: Tears produced by the lacrimal apparatus keep conjunctival surfaces moist and clean. Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
- Which sequence best describes a normal route for the flow of tears from the eyes into the nasal cavity? (a) lacrimal canaliculi, lacrimal sacs, nasolacrimal ducts; (b) lacrimal ducts, lacrimal canaliculi, nasolacrimal ducts; (c) nasolacrimal ducts, lacrimal canaliculi, lacrimal sacs.
Sri K.
Which of the following statements are true of the parts of the eye? (Read carefully and select all the correct statements.) A. Vitreous humor is reabsorbed into the canal of Schlemm. B. The radial muscles of the iris constrict the pupil. C. The white of the eye is formed by the sclera. D. The choroid layer absorbs light within the eyeball. E. The conjunctiva is kept moist by tears secreted by the lacrimal glands. F. The retina is the innermost layer of the eyeball. G. The ciliary muscle is a circular smooth muscle that changes the shape of the cornea. H. Aqueous humor is the tissue fluid of the eye; it nourishes the lens and cornea.
Madhur L.
In the embryonic development of the eye: a. the optic vesicle cells permanently adhere to each other to prevent movement, whereas the optic cup cells are very motile. b. signals from the optic cup trigger surface receptors on the lens placode. c. gradients determine that the ectoderm overlying the lens vesicle develops into the optic vesicle. d. microtubules powered by myosins and microfilaments powered by dyneins move the eye components around in the head region. e. cadherins function in the presence of calcium to allow the lens placode and optic cup to break apart.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD