41) The transparent anterior portion of the eye called the : 1200295.
41) The transparent anterior portion of the eye is called the ________.
A) cornea
B) retina
C) conjunctiva
D) lens
E) choroid
42) The lacrimal glands
A) are located in pockets in the lacrimal bones.
B) produce only about 20% of the volume of tears.
C) produce a slightly acidic secretion that contains lysozyme.
D) have a dozen or more ducts.
E) function only intermittently.
43) The fibrous layer of the eye
A) consists of the sclera and the cornea.
B) contains the intrinsic eye muscles.
C) regulates the amount of light entering the eye.
D) consists of the iris, ciliary body, and choroid.
E) consists of the retina.
44) Which of the following extrinsic eye muscles is responsible for enabling the eye to roll, look up, and look laterally?
A) inferior rectus
B) superior oblique
C) inferior oblique
D) superior rectus
E) medial rectus
45) Which of the following extrinsic eye muscles is responsible for the eye looking down?
A) lateral rectus
B) inferior oblique
C) inferior rectus
D) medial rectus
E) superior rectus
46) A soft mass that is located at the medial canthus and contains glands that produce thick secretions is the
A) superior eyelid.
B) lacrimal caruncle.
C) conjunctiva.
D) tear gland.
E) sclera.
47) The vitreous body
A) contains the lens.
B) helps to stabilize the eye shape.
C) contains blood vessels that nourish the retina.
D) is located between the lens and the iris.
E) is found in the posterior chamber.
48) The lens focuses the visual image on the photoreceptors by
A) moving up and down.
B) moving in and out.
C) changing shape.
D) opening and closing.
E) dilating and constricting.
49) The shape of the lens is controlled by the
A) pupillary constrictor muscles.
B) pupillary dilator muscles.
C) suspensory ligaments.
D) conjunctiva.
E) aqueous body.
50) The ciliary muscle helps to
A) control the amount of light reaching the retina.
B) pull the lens into a more rounded shape.
C) control the production of aqueous humor.
D) move the eyeball.
E) produce the vitreous body.
41) The transparent anterior portion of the eye called the : 1200295
