Face Muscles Quiz PDF

**1.** A patient presents with a deep scalp laceration that is gaping widely. Which of the following best explains why deep scalp wounds tend to gape? - **A.** The presence of the dense connective tissue in the second layer of the scalp - **B.** The lack of pericranium beneath the scalp layers - **...

**1.** A patient presents with a deep scalp laceration that is gaping widely. Which of the following best explains why deep scalp wounds tend to gape? - **A.** The presence of the dense connective tissue in the second layer of the scalp - **B.** The lack of pericranium beneath the scalp layers - **C.** The tone of the occipitofrontalis muscle's aponeurosis - **D.** The absence of arterial supply between the first and second layers - **E.** The loose areolar tissue allowing movement of the scalp layers **Answer:** C. The tone of the occipitofrontalis muscle's aponeurosis --- **2.** Damage to which specific branch of the facial nerve would most likely result in the inability to wrinkle the forehead on one side? - **A.** Zygomatic branch - **B.** Buccal branch - **C.** Marginal mandibular branch - **D.** Temporal branch - **E.** Cervical branch **Answer:** D. Temporal branch --- **3.** In a surgical procedure involving the anterior scalp, which of the following nerves must be carefully preserved to maintain sensation in that area? - **A.** Greater occipital nerve - **B.** Lesser occipital nerve - **C.** Auriculotemporal nerve - **D.** Supra-orbital nerve - **E.** Posterior auricular nerve **Answer:** D. Supra-orbital nerve --- **4.** A lesion affecting the internal carotid artery would most likely compromise the arterial supply to which area of the scalp? - **A.** Posterior scalp regions - **B.** Areas supplied by the occipital artery - **C.** Anterior scalp regions - **D.** Areas supplied by the posterior auricular artery - **E.** Temporal regions supplied by the superficial temporal artery **Answer:** C. Anterior scalp regions --- **5.** Which muscle, when paralyzed due to facial nerve injury, would result in a patient having difficulty compressing their cheeks against their teeth? - **A.** Orbicularis oris - **B.** Buccinator - **C.** Zygomaticus major - **D.** Risorius - **E.** Mentalis **Answer:** B. Buccinator --- **6.** A patient exhibits drooping of the lower eyelid and cannot close their eye tightly. Damage to which portion of the orbicularis oculi is most likely responsible? - **A.** Lacrimal portion - **B.** Palpebral portion - **C.** Orbital portion - **D.** Both palpebral and lacrimal portions - **E.** Both orbital and lacrimal portions **Answer:** B. Palpebral portion --- **7.** Which of the following muscles is responsible for producing a "pouting" motion of the lower lip? - **A.** Depressor anguli oris - **B.** Depressor labii inferioris - **C.** Mentalis - **D.** Platysma - **E.** Orbicularis oris **Answer:** C. Mentalis --- **8.** Injury to the posterior auricular branch of the facial nerve would most likely affect which muscle? - **A.** Frontalis - **B.** Occipital belly of occipitofrontalis - **C.** Orbicularis oculi - **D.** Zygomaticus minor - **E.** Nasalis **Answer:** B. Occipital belly of occipitofrontalis --- **9.** Compression of which nerve could lead to decreased sensation in the area supplied by the greater occipital nerve? - **A.** Spinal nerve C1 - **B.** Spinal nerve C2 - **C.** Trigeminal nerve V1 - **D.** Trigeminal nerve V2 - **E.** Facial nerve **Answer:** B. Spinal nerve C2 --- **10.** The muscle that compresses the nasal aperture and is involved in flaring the nostrils is innervated by which cranial nerve? - **A.** Trigeminal nerve (V) - **B.** Facial nerve (VII) - **C.** Glossopharyngeal nerve (IX) - **D.** Vagus nerve (X) - **E.** Accessory nerve (XI) **Answer:** B. Facial nerve (VII) --- **11.** An infection in the loose areolar tissue layer of the scalp can spread to the cranial cavity through emissary veins. This layer corresponds to which layer numerically? - **A.** First layer - **B.** Second layer - **C.** Third layer - **D.** Fourth layer - **E.** Fifth layer **Answer:** D. Fourth layer --- **12.** The muscle that brings the eyebrows together, creating vertical wrinkles above the nose, is the: - **A.** Orbicularis oculi - **B.** Corrugator supercilii - **C.** Procerus - **D.** Frontalis - **E.** Nasalis **Answer:** B. Corrugator supercilii --- **13.** A blockage in the eustachian tube can lead to middle ear infections. This tube connects the middle ear to which part of the pharynx? - **A.** Nasopharynx - **B.** Oropharynx - **C.** Laryngopharynx - **D.** Hypopharynx - **E.** Esophagus **Answer:** A. Nasopharynx --- **14.** Which sinus is located posterior to the nasal cavity and is often approached surgically through the nasal passages? - **A.** Frontal sinus - **B.** Ethmoidal sinus - **C.** Maxillary sinus - **D.** Sphenoid sinus - **E.** Mastoid sinus **Answer:** D. Sphenoid sinus --- **15.** The muscle responsible for tightly closing the eyes, such as when squinting in bright light, is the: - **A.** Orbital portion of orbicularis oculi - **B.** Palpebral portion of orbicularis oculi - **C.** Lacrimal portion of orbicularis oculi - **D.** Corrugator supercilii - **E.** Frontalis **Answer:** A. Orbital portion of orbicularis oculi --- **16.** During a facial nerve palsy, a patient is unable to close their lips effectively. Which muscle is primarily affected? - **A.** Orbicularis oris - **B.** Levator labii superioris - **C.** Depressor anguli oris - **D.** Zygomaticus major - **E.** Risorius **Answer:** A. Orbicularis oris --- **17.** Which artery is a branch of the external carotid artery and supplies the posterior aspect of the scalp? - **A.** Supra-orbital artery - **B.** Supratrochlear artery - **C.** Occipital artery - **D.** Superficial temporal artery - **E.** Posterior cerebral artery **Answer:** C. Occipital artery --- **18.** The platysma muscle is unique among muscles of facial expression because it extends into the neck. Its primary function is to: - **A.** Elevate the mandible - **B.** Depress the mandible and lower lip - **C.** Elevate the hyoid bone - **D.** Tense the skin of the neck - **E.** Assist in swallowing **Answer:** D. Tense the skin of the neck --- **19.** Which nerve provides cutaneous innervation to the skin over the angle of the mandible and is derived from the cervical plexus? - **A.** Great auricular nerve - **B.** Auriculotemporal nerve - **C.** Lesser occipital nerve - **D.** Transverse cervical nerve - **E.** Mandibular branch of the facial nerve **Answer:** A. Great auricular nerve --- **20.** The hard and soft palate separate which two cavities in the head? - **A.** Nasal cavity and nasopharynx - **B.** Oral cavity and oropharynx - **C.** Nasal cavity and oral cavity - **D.** Nasopharynx and oropharynx - **E.** Oropharynx and laryngopharynx **Answer:** C. Nasal cavity and oral cavity --- **21.** Damage to the facial nerve proximal to the stylomastoid foramen would affect all of the following muscles EXCEPT: - **A.** Frontalis - **B.** Buccinator - **C.** Stapedius - **D.** Platysma - **E.** Masseter **Answer:** E. Masseter --- **22.** The muscle that compresses the nostrils and is involved in expressions of disdain is the: - **A.** Procerus - **B.** Nasalis (transverse part) - **C.** Nasalis (alar part) - **D.** Levator labii superioris alaeque nasi - **E.** Depressor septi nasi **Answer:** B. Nasalis (transverse part) --- **23.** The frontal sinus drains into which part of the nasal cavity? - **A.** Superior meatus - **B.** Middle meatus - **C.** Inferior meatus - **D.** Sphenoethmoidal recess - **E.** Nasopharynx **Answer:** B. Middle meatus --- **24.** A lesion of the trigeminal nerve affecting the maxillary division (V2) would impair sensation in which of the following areas? - **A.** Forehead and scalp - **B.** Upper lip and cheek - **C.** Lower lip and chin - **D.** Anterior two-thirds of the tongue - **E.** External ear **Answer:** B. Upper lip and cheek --- **25.** Which muscle is primarily responsible for elevating the angle of the mouth, as in smiling? - **A.** Levator anguli oris - **B.** Zygomaticus major - **C.** Risorius - **D.** Depressor anguli oris - **E.** Levator labii superioris **Answer:** B. Zygomaticus major --- **26.** The muscle that assists in opening the nostrils during deep inspiration is the: - **A.** Nasalis (transverse part) - **B.** Nasalis (alar part) - **C.** Depressor septi nasi - **D.** Procerus - **E.** Levator labii superioris **Answer:** B. Nasalis (alar part) --- **27.** The middle meningeal artery enters the cranial cavity through which foramen, posing a risk during temporal bone fractures? - **A.** Foramen spinosum - **B.** Foramen ovale - **C.** Foramen rotundum - **D.** Jugular foramen - **E.** Carotid canal **Answer:** A. Foramen spinosum --- **28.** The lacrimal portion of the orbicularis oculi muscle has what primary function? - **A.** Gently closing the eyelids - **B.** Tight closure of the eyes - **C.** Facilitating tear drainage - **D.** Elevating the upper eyelid - **E.** Depressing the lower eyelid **Answer:** C. Facilitating tear drainage --- **29.** Inflammation of which sinus can cause pain that is perceived as dental pain due to its proximity to the maxillary teeth? - **A.** Frontal sinus - **B.** Ethmoidal sinus - **C.** Maxillary sinus - **D.** Sphenoid sinus - **E.** Mastoid sinus **Answer:** C. Maxillary sinus --- **30.** The nerve that provides motor innervation to the buccinator muscle is the: - **A.** Buccal branch of the facial nerve - **B.** Buccal nerve of the trigeminal nerve - **C.** Marginal mandibular branch of the facial nerve - **D.** Glossopharyngeal nerve - **E.** Hypoglossal nerve **Answer:** A. Buccal branch of the facial nerve --- **31.** Which muscle originates from the second pharyngeal arch and assists in elevating the upper lip? - **A.** Levator labii superioris - **B.** Masseter - **C.** Temporalis - **D.** Medial pterygoid - **E.** Mylohyoid **Answer:** A. Levator labii superioris --- **32.** The nerve responsible for cutaneous sensation over the parotid gland and anterior ear is the: - **A.** Greater auricular nerve - **B.** Auriculotemporal nerve - **C.** Lesser occipital nerve - **D.** Great occipital nerve - **E.** Facial nerve **Answer:** B. Auriculotemporal nerve --- **33.** Damage to which cranial nerve can result in "exposure keratitis" due to the inability to close the eyelids? - **A.** Oculomotor nerve (III) - **B.** Trochlear nerve (IV) - **C.** Trigeminal nerve (V) - **D.** Facial nerve (VII) - **E.** Abducens nerve (VI) **Answer:** D. Facial nerve (VII) --- **34.** The muscle that elevates the skin of the chin and protrudes the lower lip is the: - **A.** Depressor labii inferioris - **B.** Mentalis - **C.** Orbicularis oris - **D.** Depressor anguli oris - **E.** Platysma **Answer:** B. Mentalis --- **35.** The lesser occipital nerve arises from which spinal nerves? - **A.** C1 only - **B.** C2 only - **C.** C2 and C3 - **D.** C3 and C4 - **E.** C4 and C5 **Answer:** C. C2 and C3 --- **36.** In a patient with difficulty elevating the eyebrows and wrinkling the forehead, but intact sensation, which nerve is most likely damaged? - **A.** Trigeminal nerve (V1) - **B.** Facial nerve (temporal branch) - **C.** Facial nerve (zygomatic branch) - **D.** Facial nerve (buccal branch) - **E.** Oculomotor nerve (III) **Answer:** B. Facial nerve (temporal branch) --- **37.** Which of the following is NOT a branch of the external carotid artery supplying the scalp? - **A.** Superficial temporal artery - **B.** Posterior auricular artery - **C.** Occipital artery - **D.** Supratrochlear artery - **E.** None of the above **Answer:** D. Supratrochlear artery --- **38.** The muscle that depresses the medial end of the eyebrow and wrinkles the skin over the dorsum of the nose is the: - **A.** Procerus - **B.** Corrugator supercilii - **C.** Frontalis - **D.** Nasalis (alar part) - **E.** Orbicularis oculi **Answer:** A. Procerus --- **39.** The mandibular division of the trigeminal nerve (V3) provides sensory innervation to which area? - **A.** Anterior scalp - **B.** Upper lip - **C.** Lower lip and chin - **D.** Cheek - **E.** Nasal bridge **Answer:** C. Lower lip and chin --- **40.** Which muscle, when contracted, retracts the scalp and increases the effectiveness of the frontal belly of the occipitofrontalis? - **A.** Platysma - **B.** Occipital belly of occipitofrontalis - **C.** Temporalis - **D.** Auricular muscles - **E.** Masseter **Answer:** B. Occipital belly of occipitofrontalis --- These questions are designed to test a deep understanding of the anatomy, innervation, and functions of the scalp and facial muscles, as well as related anatomical structures. They require integration of knowledge and the ability to apply it to clinical scenarios, reflecting the complexity expected at a medical student exam level.