VM 704 (Anatomy)- Autonomic Neuroanatomy and Hormonal Regulation

Where does the vagus nerve pass through?

Through the thorax and to the heart

Where do the parasympathetic fibers of the oculomotor nerve (CN III) go to?

The iris sphincter (constricts the pupil)

What are the 3 main innervations of the parasympathetic fibers of the facial nerve (CN VII)?

1. Lacrimal gland

2. Muscosal glands

3. Salivary glands

What do the parasympathetic fibers of the glossopharyngeal nerve (CN IX) innervate?

Zygomatic salivary glands

What do the parasympathetic fibers of the vagus nerve (CN X) innervate?

Heart, lungs, and gut

What do the sympathetic fibers of the hypogastric nerve innervate?

Urinary bladder (closes urethral sphincter)

What do the greater/major splanchnic nerves innervate?

The adrenal glands

What do the sympathetic fibers of the celiacomesenteric plexus innervate?

Viscera and adrenal glands

What is the structure that splits around the subclavian artery?

Ansa subclavia

What is the point where the sympathetics branch off just ventral to the ear?

The cranial cervical ganglion

What is the role of the dilator muscle of the pupil?

It keeps the pupil wide in dim light

What is the role of the smooth muscle of the upper eyelid?

It holds the eyelid up

What is the role of the smooth muscle of the orbit?

Holds the eyeball forward/retracts the third eyelid

Where are the adrenal glands located in relation to the kidneys?

Craniomedial to each kidney