Podcast
Questions and Answers
What is the name of the layer that binds the skin tightly to the aponeurosis?
What is the name of the layer that binds the skin tightly to the aponeurosis?
Which of the following is NOT a function of the subaponeurotic space?
Which of the following is NOT a function of the subaponeurotic space?
What is the posterior extent of the scalp?
What is the posterior extent of the scalp?
What is the clinical importance of the subaponeurotic space?
What is the clinical importance of the subaponeurotic space?
Signup and view all the answers
How many bellies does the occipitofrontalis muscle have?
How many bellies does the occipitofrontalis muscle have?
Signup and view all the answers
What is the name of the layer that contains loose areolar tissue?
What is the name of the layer that contains loose areolar tissue?
Signup and view all the answers
Which artery supplies the scalp just behind the ear?
Which artery supplies the scalp just behind the ear?
Signup and view all the answers
What is the lateral extent of the scalp?
What is the lateral extent of the scalp?
Signup and view all the answers
Which vein drains into the suboccipital venous plexus?
Which vein drains into the suboccipital venous plexus?
Signup and view all the answers
What is the name of the vein that unites with the maxillary vein to form the retromandibular vein?
What is the name of the vein that unites with the maxillary vein to form the retromandibular vein?
Signup and view all the answers
What is the function of the epicranial aponeurosis?
What is the function of the epicranial aponeurosis?
Signup and view all the answers
Which vein is formed by the union of the supraorbital vein and Supratrochlear veins?
Which vein is formed by the union of the supraorbital vein and Supratrochlear veins?
Signup and view all the answers
Which artery arises from the ophthalmic artery?
Which artery arises from the ophthalmic artery?
Signup and view all the answers
What is the name of the vein that communicates the superficial veins of the scalp with the dural venous sinuses?
What is the name of the vein that communicates the superficial veins of the scalp with the dural venous sinuses?
Signup and view all the answers
Which vein may drain directly into the internal jugular vein?
Which vein may drain directly into the internal jugular vein?
Signup and view all the answers
Which of the following veins drains into the external jugular vein?
Which of the following veins drains into the external jugular vein?
Signup and view all the answers
Which blood vessel arises from the internal carotid artery and supplies the anterior part of the scalp?
Which blood vessel arises from the internal carotid artery and supplies the anterior part of the scalp?
Signup and view all the answers
Which branch of the facial nerve supplies the frontal bellies of the occipitofrontal muscle?
Which branch of the facial nerve supplies the frontal bellies of the occipitofrontal muscle?
Signup and view all the answers
What is the function of the frontal bellies of the occipitofrontal muscle?
What is the function of the frontal bellies of the occipitofrontal muscle?
Signup and view all the answers
Where do the occipital bellies of the occipitofrontal muscle originate from?
Where do the occipital bellies of the occipitofrontal muscle originate from?
Signup and view all the answers
Which artery is a terminal branch of the external carotid artery and supplies the temporal fossa?
Which artery is a terminal branch of the external carotid artery and supplies the temporal fossa?
Signup and view all the answers
What is the function of the epicranial aponeurosis?
What is the function of the epicranial aponeurosis?
Signup and view all the answers
Which nerve branch supplies the occipital bellies of the occipitofrontal muscle?
Which nerve branch supplies the occipital bellies of the occipitofrontal muscle?
Signup and view all the answers
Where does the superficial temporal artery cross before entering the temporal fossa?
Where does the superficial temporal artery cross before entering the temporal fossa?
Signup and view all the answers
Study Notes
Anatomy of the Scalp
- The scalp is the soft tissue covering the vault of the skull.
- Extent: anteriorly to the eyebrows, posteriorly to the superior nuchal line and the external occipital protuberance, and laterally to the superior temporal lines.
Layers of the Scalp
- Skin: has hairs and numerous sebaceous glands.
- Superficial fascia: dense connective tissue that binds the skin tightly to the aponeurosis, contains blood vessels and nerves of the scalp.
- Epicranial aponeurosis
- Subaponeurotic space: loose areolar tissue that allows movement of the first 3 layers of the scalp over the skull, contains a few small arteries and emissary veins.
- Pericranium (periosteum)
Subaponeurotic Space
- Extends beneath the orbicularis oculi into the eyelids anteriorly.
- Extends to the superior nuchal line posteriorly.
- Extends to the temporal fascia laterally.
- Clinical importance: bleeding in this space can cause a black eye.
Occipitofrontalis Muscle
- The only muscle of the scalp, consisting of 2 frontal bellies and 2 occipital bellies.
- The frontal bellies are connected at the median plane.
- Supplies the side of the scalp.
- Nerve supply: facial nerve (temporal branch for frontal bellies, posterior auricular branch for occipital bellies).
- Action: moves the scalp forward and backward, elevates the eyebrows, and causes transverse wrinkles of the forehead.
Arterial Supply of the Scalp
- In front of the auricle: supratrochlear, supraorbital, and superficial temporal arteries.
- Behind the auricle: posterior auricular and occipital arteries.
Venous Drainage of the Scalp
- Superficial veins: supraorbital, supratrochlear, superficial temporal, posterior auricular, and occipital veins.
- Deep veins (emissary veins): in the subaponeurotic space, communicating superficial veins with dural venous sinuses.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Learn about the anatomy of the scalp, including its definition, extent, layers, muscle structure, and blood supply. This lecture covers key concepts and objectives for students of anatomy and embryology.
