6/10/2017 Head FRCEM Success
Dashboard Subscription expires in: 1 Days Extend
You have scored 9%
You answered 10 correct out of 115 questions.
Your answers are shown below:
The skin over the tip of the nose is primarily supplied by which of the following nerves:
a) Lacrimal nerve
b) Infratrochlear nerve
c) Buccal nerve
d) External nasal nerve
e) Infraorbital nerve
Something wrong?
Answer
The external nasal nerve, branch of the ophthalmic nerve, innervates the anterior part of the nose.
Notes
The trigeminal nerve divides into three major divisions: the ophthalmic (V1), maxillary (V2) and mandibular (V3) nerves
which supply the skin of the face.
The ophthalmic nerve exits the skull through the superior orbital ssure to enter the orbit. It gives rise to ve
cutaneous branches that supply the face:
the supraorbital nerve (innervating skin of the upper eyelid and conjunctiva and the skin of the upper forehead
extending back to the middle of the scalp)
the supratrochlear nerve (innervating skin of the lower central part of the forehead and conjunctiva and skin of
the upper eyelid)
the infratrochlear nerve (innervating the medial half of the upper eyelid, the skin in the area of the medial
http://frcemsuccess.com/rev/sc37/ 1/192
,6/10/2017 Head FRCEM Success
the infratrochlear nerve (innervating the medial half of the upper eyelid, the skin in the area of the medial
angle and the side of the nose)
the lacrimal nerve (innervating the lateral half of the upper eyelid and the skin in the area of the lateral angle)
the external nasal nerve (innervating the anterior part of the nose).
The maxillary nerve exits the skull through the foramen rotundum and gives rise to three cutaneous branches that
supply the face:
the zygomaticotemporal nerve (innervating a small area of the anterior temple above the zygomatic arch)
the zygomaticofacial nerve (innervating a small area of skin over the zygomatic bone)
the infraorbital nerve (innervating the lower eyelid, the cheek, the side of the nose and the upper lip).
The mandibular nerve exits the skull through the foramen ovale and gives rise to three cutaneous branches that supply
the face:
the auriculotemporal nerve (innervating the external acoustic meatus, the surface of the tympanic membrane
and a large area of the temple)
the buccal nerve (innervating the cheek)
the mental nerve (innervating the skin and mucous membranes of the lower lip and the skin of the chin).
By Patrick J. Lynch, medical illustrator (Patrick J. Lynch, medical illustrator) [CC BY 2.5], via Wikimedia
Commons
A 29 year old male patient is brought into ED by the police. The man was found unconscious
after a witnessed ght. The patient has signi cant bruising and abrasions to his face. Imaging
http://frcemsuccess.com/rev/sc37/ 2/192
,6/10/2017 Head FRCEM Success
reveals that the middle meningeal artery has ruptured. Where would you most likely see blood in
this patient:
a) Subarachnoid space
b) Subdural space
c) Extradural space
d) Cranial dural sinuses
e) Ventricles
Something wrong?
Answer
Within the cranial cavity, the middle meningeal artery and its branches travel in the outer layer of the dura mater,
where they can be damaged by lateral blows to the head. When the vessels are torn, the leaking blood, which is under
arterial pressure, slowly separates the dura from its attachment to bone, resulting in an extradural haematoma.
Notes
The maxillary artery is the largest branch of the external carotid artery and a major source of blood supply for the nasal
cavity, the lateral wall and roof of the oral cavity, all teeth and the dura mater in the cranial cavity.
It passes through and supplies the infratemporal fossa and then enters the pterygopalatine fossa, where it gives origin
to terminal branches.
The middle meningeal artery arises from the maxillary artery and ascends vertically to enter the cranial cavity. Within
the cranial cavity, the middle meningeal artery and its branches travel in the outer layer of the dura mater, where they
can be damaged by lateral blows to the head. When the vessels are torn, the leaking blood, which is under arterial
pressure, slowly separates the dura from its attachment to bone, resulting in an extradural haematoma.
http://frcemsuccess.com/rev/sc37/ 3/192
, 6/10/2017 Head FRCEM Success
By User:Mikael Häggström [Public domain, Public domain or Public domain], via Wikimedia
Commons
Sensation from the posterior one-third of the tongue is carried by which of the following
nerves:
a) Facial nerve
b) Chorda tympani
c) Glossopharyngeal nerve
d) Hypoglossal nerve
e) Lingual nerve
Something wrong?
Answer
Taste and sensation from the posterior one-third of the tongue is carried by the glossopharyngeal nerve.
Notes
The tongue is a muscular structure that forms part of the oor of the oral cavity and part of the anterior wall of the
oropharynx. The anterior two-thirds of the tongue are in the oral cavity. The posterior root of the tongue is attached to
the mandible and the hyoid bone. The anterior wall of the oropharynx inferior to the oropharyngeal isthmus is formed
by the upper part of the posterior one-third of the tongue.
A pair of mucosal pouches (valleculae), one on each side of the midline, between the base of the tongue and epiglottis,
are depressions formed between the midline mucosal fold and two lateral folds that connect the tongue to the
epiglottis.
http://frcemsuccess.com/rev/sc37/ 4/192
Dashboard Subscription expires in: 1 Days Extend
You have scored 9%
You answered 10 correct out of 115 questions.
Your answers are shown below:
The skin over the tip of the nose is primarily supplied by which of the following nerves:
a) Lacrimal nerve
b) Infratrochlear nerve
c) Buccal nerve
d) External nasal nerve
e) Infraorbital nerve
Something wrong?
Answer
The external nasal nerve, branch of the ophthalmic nerve, innervates the anterior part of the nose.
Notes
The trigeminal nerve divides into three major divisions: the ophthalmic (V1), maxillary (V2) and mandibular (V3) nerves
which supply the skin of the face.
The ophthalmic nerve exits the skull through the superior orbital ssure to enter the orbit. It gives rise to ve
cutaneous branches that supply the face:
the supraorbital nerve (innervating skin of the upper eyelid and conjunctiva and the skin of the upper forehead
extending back to the middle of the scalp)
the supratrochlear nerve (innervating skin of the lower central part of the forehead and conjunctiva and skin of
the upper eyelid)
the infratrochlear nerve (innervating the medial half of the upper eyelid, the skin in the area of the medial
http://frcemsuccess.com/rev/sc37/ 1/192
,6/10/2017 Head FRCEM Success
the infratrochlear nerve (innervating the medial half of the upper eyelid, the skin in the area of the medial
angle and the side of the nose)
the lacrimal nerve (innervating the lateral half of the upper eyelid and the skin in the area of the lateral angle)
the external nasal nerve (innervating the anterior part of the nose).
The maxillary nerve exits the skull through the foramen rotundum and gives rise to three cutaneous branches that
supply the face:
the zygomaticotemporal nerve (innervating a small area of the anterior temple above the zygomatic arch)
the zygomaticofacial nerve (innervating a small area of skin over the zygomatic bone)
the infraorbital nerve (innervating the lower eyelid, the cheek, the side of the nose and the upper lip).
The mandibular nerve exits the skull through the foramen ovale and gives rise to three cutaneous branches that supply
the face:
the auriculotemporal nerve (innervating the external acoustic meatus, the surface of the tympanic membrane
and a large area of the temple)
the buccal nerve (innervating the cheek)
the mental nerve (innervating the skin and mucous membranes of the lower lip and the skin of the chin).
By Patrick J. Lynch, medical illustrator (Patrick J. Lynch, medical illustrator) [CC BY 2.5], via Wikimedia
Commons
A 29 year old male patient is brought into ED by the police. The man was found unconscious
after a witnessed ght. The patient has signi cant bruising and abrasions to his face. Imaging
http://frcemsuccess.com/rev/sc37/ 2/192
,6/10/2017 Head FRCEM Success
reveals that the middle meningeal artery has ruptured. Where would you most likely see blood in
this patient:
a) Subarachnoid space
b) Subdural space
c) Extradural space
d) Cranial dural sinuses
e) Ventricles
Something wrong?
Answer
Within the cranial cavity, the middle meningeal artery and its branches travel in the outer layer of the dura mater,
where they can be damaged by lateral blows to the head. When the vessels are torn, the leaking blood, which is under
arterial pressure, slowly separates the dura from its attachment to bone, resulting in an extradural haematoma.
Notes
The maxillary artery is the largest branch of the external carotid artery and a major source of blood supply for the nasal
cavity, the lateral wall and roof of the oral cavity, all teeth and the dura mater in the cranial cavity.
It passes through and supplies the infratemporal fossa and then enters the pterygopalatine fossa, where it gives origin
to terminal branches.
The middle meningeal artery arises from the maxillary artery and ascends vertically to enter the cranial cavity. Within
the cranial cavity, the middle meningeal artery and its branches travel in the outer layer of the dura mater, where they
can be damaged by lateral blows to the head. When the vessels are torn, the leaking blood, which is under arterial
pressure, slowly separates the dura from its attachment to bone, resulting in an extradural haematoma.
http://frcemsuccess.com/rev/sc37/ 3/192
, 6/10/2017 Head FRCEM Success
By User:Mikael Häggström [Public domain, Public domain or Public domain], via Wikimedia
Commons
Sensation from the posterior one-third of the tongue is carried by which of the following
nerves:
a) Facial nerve
b) Chorda tympani
c) Glossopharyngeal nerve
d) Hypoglossal nerve
e) Lingual nerve
Something wrong?
Answer
Taste and sensation from the posterior one-third of the tongue is carried by the glossopharyngeal nerve.
Notes
The tongue is a muscular structure that forms part of the oor of the oral cavity and part of the anterior wall of the
oropharynx. The anterior two-thirds of the tongue are in the oral cavity. The posterior root of the tongue is attached to
the mandible and the hyoid bone. The anterior wall of the oropharynx inferior to the oropharyngeal isthmus is formed
by the upper part of the posterior one-third of the tongue.
A pair of mucosal pouches (valleculae), one on each side of the midline, between the base of the tongue and epiglottis,
are depressions formed between the midline mucosal fold and two lateral folds that connect the tongue to the
epiglottis.
http://frcemsuccess.com/rev/sc37/ 4/192
