Scalp Anatomy and Clinical Notes

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Questions and Answers

What is a common issue with the ducts of sebaceous glands in the scalp?

They are too small

They are only found on the face

They produce too much oil

They are prone to infection and damage (correct)

Where do the vessels in the back of the scalp drain into?

Occipital nodes (correct)

Frontal nodes

Parietal nodes

Temporal nodes

What is a function of sebaceous glands in the scalp?

To produce saliva

To produce sweat

To regulate body temperature

To produce sebum (correct)

What can cause damage to the ducts of sebaceous glands in the scalp?

Combing Signup and view all the answers

What is a characteristic of the skin of the scalp?

It possesses numerous sebaceous glands Signup and view all the answers

What is the result of an infection of the scalp spreading to the skull bones?

Osteomyelitis Signup and view all the answers

Why are the emissary veins important in the spread of infection from the scalp to the skull bones?

They are valveless Signup and view all the answers

What is the name of the blood vessels that allow the infection to spread from the scalp to the skull bones?

Emissary veins Signup and view all the answers

Where do the main trunks of the sensory nerves of the scalp lie?

In the superficial fascia Signup and view all the answers

What is the primary location of the sensory nerve supply of the scalp?

In the superficial fascia Signup and view all the answers

What is the origin of the infection that spreads to the skull bones?

Scalp tissue Signup and view all the answers

What type of blood vessels are present in the areolar tissue?

A few small arteries and important emissary veins Signup and view all the answers

What is the consequence of an infection spreading through the emissary veins?

Bone damage Signup and view all the answers

What is the characteristic of the emissary veins in the areolar tissue?

They are valveless and connect the superficial veins of the scalp Signup and view all the answers

Which of the following is a characteristic of the sensory nerve supply of the scalp?

It is located in the superficial fascia Signup and view all the answers

What do the emissary veins in the areolar tissue connect?

The superficial veins of the scalp with the diploic veins of the skull bones and with the intracranial venous sinuses Signup and view all the answers

In which layer of the scalp do the main trunks of the sensory nerves lie?

Superficial fascia Signup and view all the answers

Where are the diploic veins located?

In the skull bones Signup and view all the answers

What is the location of the main trunks of the sensory nerves in relation to the scalp muscles?

Superficial to the scalp muscles Signup and view all the answers

What is the function of the emissary veins in the areolar tissue?

To connect the superficial veins of the scalp with the diploic veins of the skull bones and with the intracranial venous sinuses Signup and view all the answers

Which artery is the posterior auricular artery a branch of?

External carotid artery Signup and view all the answers

What is the primary function of the posterior auricular artery?

To supply the scalp above and behind the auricle Signup and view all the answers

What is the direction of flow of the posterior auricular artery?

Ascending Signup and view all the answers

Where does the posterior auricular artery ascend behind?

The auricle Signup and view all the answers

What is the region supplied by the posterior auricular artery?

Above and behind the auricle Signup and view all the answers

Study Notes

Vessels of the Scalp

Vessels in the back of the scalp drain into the occipital nodes.
Emissary veins are valveless and connect the superficial veins of the scalp with the diploic veins of the skull bones and with the intracranial venous sinuses.
The areolar tissue contains a few small arteries and some important emissary veins.

Infections of the Scalp

The ducts of sebaceous glands are prone to infection and damage by combs.
Infections of the scalp can spread to the skull bones, causing osteomyelitis, through the emissary veins.

Sensory Nerve Supply of the Scalp

The main trunks of the sensory nerves lie in the superficial fascia.

Blood Supply of the Scalp

The posterior auricular artery is a branch of the external carotid artery.
The posterior auricular artery ascends behind the auricle to supply the scalp above and behind the auricle.