Chapter 16, Problem 2CT

Summary Introduction

Case Summary:

The nerve damage reduces salivary and lacrimal gland secretion.

Adequate Information:

Both lacrimal and salivary glands are innervated by the parasympathetic and sympathetic nerve fiber. That helps in controlling their secretions. The lacrimal gland secretes lacrimal fluid in the conjunctiva and cornea whereas; salivary gland secretes saliva in the mouth.

To determine:

The reduction in the secretion from salivary and lacrimal glands indicates damage to the nerve.

Given Information:

The ability of an individual to maintain homeostasis is completely based on the regulating activity of the ANS. Autonomic regulation is completely based on three components baroreceptors, chemoreceptors and sensory afferents. The signals produced by these receptors are integrated by the brain stem. It controls the functioning of several glands such as salivary glands. It controls two kinds of activity autonomic and local reflexes.