Main nerves of the head and neck

This tutorial provides an overview of the main nerves supplying the head and neck, focusing on the 12 cranial nerves and the cervical plexus. It details the sensory and motor functions of each cranial nerve, including the olfactory, optic, and oculomotor nerves, among others. The tutorial also covers the cervical plexus, highlighting its sensory and motor branches, such as the phrenic nerve. Clinical applications, like the cervical plexus block, are discussed, providing a comprehensive understanding of these nerves' roles in anatomy and medicine.

What is the primary focus of this tutorial?

• The anatomy of the spinal cord

• The major nerves supplying the head and neck

• The muscles of the upper limb

• The blood vessels of the brain

Which cranial nerve is responsible for the sense of smell?

• Optic nerve

• Oculomotor nerve

• Trigeminal nerve

• Olfactory nerve

The optic nerve is crucial for which function?

• Smell

• Vision

• Hearing

• Taste

Which nerve innervates the superior oblique muscle of the eye?

• Trochlear nerve

• Facial nerve

• Abducens nerve

• Oculomotor nerve

The trigeminal nerve is divided into how many major branches?

• Two

• Three

• Five

• Four

Which cranial nerve is responsible for facial expressions?

• Glossopharyngeal nerve

• Trigeminal nerve

• Vagus nerve

• Facial nerve

The vestibulocochlear nerve primarily provides sensory innervation to which part of the body?

• The eyes

• The tongue

• The inner ear

• The nose

Which cranial nerve extends beyond the head and neck to supply the heart and gastrointestinal tract?

• Facial nerve

• Hypoglossal nerve

• Accessory nerve

• Vagus nerve

The phrenic nerve is primarily responsible for innervating which muscle?

• The deltoid

• The biceps

• The quadriceps

• The diaphragm

What is a potential consequence of damage to the phrenic nerve?

• Paralysis of the diaphragm

• Blindness

• Hearing loss

• Loss of taste