Question

(10/22/25) assignment (classwork) formative assessment: ch 8 special senses part 3 (pages 3 of 8) eye reflexes both the internal and external (extrinsic) eye (1 ) are necessary for proper eye function. the autonomic nervous system controls the internal muscles. as mentioned earlier, these muscles include those of the ciliary body, which alters lens (2 ), and the radial and circular muscles of the iris, which control pupil size. the external muscles are the rectus and oblique muscles attached to the eyeball exterior (see figure 8.3), which control (3 ) movements and make it possible to follow moving objects. they are also responsible for convergence, which is the (4 ) movement of the eyes medially when we view close objects. when convergence occurs, both eyes are aimed toward the near object being viewed. the extrinsic muscles are controlled by (5 ) fibers of cranial nerves iii, iv, and vi (see figure 8.3) 1. eye 2. reflexive 3. somatic 4. muscles 5. curvature 1. curvature 2. eye 3. reflexive 4. somatic 5. muscles 1 reflexive 2 somatic 3 muscles 4 curvature 5. eye 1. somatic 2 muscles 3. curvature 4. eye 5. reflexive 1. muscles 2. curvature 3. eye 4. reflexive 5. somatic

Explanation:

• For the first blank, "muscles" makes sense as both internal and external (extrinsic) eye muscles are needed for eye function.
• The ciliary body alters lens "curvature".
• The external muscles control "eye" movements.
• Convergence is the movement of the eyes medially, which is related to "reflexive" action.
• The extrinsic muscles are controlled by "somatic" fibers of cranial nerves.

Answer:

1. muscles 2. curvature 3. eye 4. reflexive 5. somatic