Chapter 19: Special Senses Question
and answers correctly solved
2025/2026
70% of all sensory receptors are in the - correct answer ✔eye
accessory structures of the eye include - correct answer ✔eyebrows, eyelids, conjunctiva, lacrimal
apparatus, extrinsic eye muscles
Conjunctiva is a transparent membrane that: (3) - correct answer ✔-membrane that lines the eyelids
and eyeball
-connects with the transparent cornea
-covers the whites of the eyes as the ocular conjunctiva
-secrets mucus to lubricate and keep the eye moist
Lacrimal apparatus consists of: - correct answer ✔lacrimal gland and ducts
lacrimal gland function - correct answer ✔secretes tears, from upper lateral end of eye
Tears contain - correct answer ✔dilute salt solution, mucus, antibodies, and lysozyme
Path of tears from lacrimal gland to nose. - correct answer ✔Lacrimal gland across eye to lacrimal
canaliculi to the lacrimal sac and into the nasolacrimal duct which empties into the nasal cavity
tears drain into - correct answer ✔nasolacrimal duct
, How many extrinsic eye muscles are there? - correct answer ✔6
Function of the 6 extrinsic eye muscles - correct answer ✔-enable eye to follow moving objects
-maintain the shape of the eyeball
Wall of eyeball contains three tunic layers - correct answer ✔fibrous, vascular, sensory
The internal cavity of the eye is filled with fluids called - correct answer ✔humors
Lens separates internal cavity into (_______) and (_______) segments - correct answer
✔anterior(aqueous) and posterior(vitreous)
fibrous tunic - correct answer ✔outer layer of the eye
fibrous tunic is composed of - correct answer ✔sclera and cornea
function of sclera - correct answer ✔White of the eye, protects the eye and anchors extrinsic muscles
Function of cornea - correct answer ✔Transparent, central anterior portion, lets light enter the eye,
repairs easily. Only tissue can transplant without rejection.
3 regions of the vascular tunic - correct answer ✔choroid, ciliary body, iris
Structure & Function of choroid region of vascular layer - correct answer ✔-dark brown membrane that
forms the posterior portion of eye
-supplies blood
-prevents light from scattering
and answers correctly solved
2025/2026
70% of all sensory receptors are in the - correct answer ✔eye
accessory structures of the eye include - correct answer ✔eyebrows, eyelids, conjunctiva, lacrimal
apparatus, extrinsic eye muscles
Conjunctiva is a transparent membrane that: (3) - correct answer ✔-membrane that lines the eyelids
and eyeball
-connects with the transparent cornea
-covers the whites of the eyes as the ocular conjunctiva
-secrets mucus to lubricate and keep the eye moist
Lacrimal apparatus consists of: - correct answer ✔lacrimal gland and ducts
lacrimal gland function - correct answer ✔secretes tears, from upper lateral end of eye
Tears contain - correct answer ✔dilute salt solution, mucus, antibodies, and lysozyme
Path of tears from lacrimal gland to nose. - correct answer ✔Lacrimal gland across eye to lacrimal
canaliculi to the lacrimal sac and into the nasolacrimal duct which empties into the nasal cavity
tears drain into - correct answer ✔nasolacrimal duct
, How many extrinsic eye muscles are there? - correct answer ✔6
Function of the 6 extrinsic eye muscles - correct answer ✔-enable eye to follow moving objects
-maintain the shape of the eyeball
Wall of eyeball contains three tunic layers - correct answer ✔fibrous, vascular, sensory
The internal cavity of the eye is filled with fluids called - correct answer ✔humors
Lens separates internal cavity into (_______) and (_______) segments - correct answer
✔anterior(aqueous) and posterior(vitreous)
fibrous tunic - correct answer ✔outer layer of the eye
fibrous tunic is composed of - correct answer ✔sclera and cornea
function of sclera - correct answer ✔White of the eye, protects the eye and anchors extrinsic muscles
Function of cornea - correct answer ✔Transparent, central anterior portion, lets light enter the eye,
repairs easily. Only tissue can transplant without rejection.
3 regions of the vascular tunic - correct answer ✔choroid, ciliary body, iris
Structure & Function of choroid region of vascular layer - correct answer ✔-dark brown membrane that
forms the posterior portion of eye
-supplies blood
-prevents light from scattering
