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Gross Anatomy II > Unit I: Mandible and Associated Structures > Flashcards

Unit I: Mandible and Associated Structures Flashcards

1
Q

This is the largest and sturdiest facial bone

A

Mandible (lower jaw)

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2
Q

The large horizontal part of the mandible

A

Body

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3
Q

The upper border of the body of the mandible containing the tooth sockets

A

Alveolar process

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4
Q

Another name for tooth sockets

A

Alveoli

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5
Q

Vertically ascending part of the mandible

A

Ramus

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6
Q

This is found at the POSTERIOR terminus of the body

A

Angle

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7
Q

This articulates with the temporal bone to form the temporomandibular joint

A

Condylar process

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8
Q

Area of attachment for muscles of mastication

A

Coronoid process

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9
Q

This is a sydrome in which there is misalignment of the temporomandibular joint . It is one of the major causes of headaches and it puts abnormal traction on the muscles.

A

Temporomandibular joint sydrome (TMJ)

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10
Q

This is found on the INTERNAL surface of the mandible and is the origin of the genioglossus muscle

A

Superior mental (genial) spine

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11
Q

This is found on the INTERNAL surface of the mandible and is the origin of the geniohyoid muscle

A

Inferior mental (genial) spine

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12
Q

Located on the INTERNAL surface of the mandible and is the origin of the anterior belly of the digastric

A

Digastric fossa

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13
Q

Located on the INTERNAL surface of the mandible and is the origin of the mylohyoid muscle. Ridge on inner surface of the mandible/floor of the mouth.

A

Mylohyoid line

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14
Q

Found on the INTERNAL surface of the mandible and is the location of the sublingual gland

A

Sublingual fossa

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15
Q

This is located on the INTERNAL surface of the mandible and is the location of part of the submandibular gland

A

Submandibular fossa

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16
Q

Origin of the Digastric muscle

A

1) posterior belly–mastoid process

2) anterior belly–digastric fossa

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17
Q

Insertion of the Digastric muscle

A

Both bellies insert into the hyoid bone by an intermediate tendon that connects them together. The intermediate tendon is strapped to the hyoid bone by a fibrous loop

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18
Q

Nerve supply to the Digastric

A

1) posterior belly–cervical branch of the facial nerve (CN VII)
2) anterior belly–nerve to mylohyoid (CN V)

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19
Q

Function of the Digastric muscle

A

1) Elevates the hyoid bone

2) Depresses the mandible when hyoid is fixed

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20
Q

Origin of the Mylohyoid muscle

A

Mylohyoid line

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21
Q

Insertion of the Mylohyoid muscle

A

1) body of hyoid bone

2) median raphe

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22
Q

Where fibers from two sides come together and interweave

A

Raphe

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23
Q

Nerve supply to the Mylohyoid muscle

A

Nerve to Mylohyoid (CN V)

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24
Q

Function of the Mylohyoid muscle

A

Elevates hyoid bone and floor of mouth

25
Q

Origin of Geniohyoid

A

Inferior mental spine

26
Q

Insertion of Geniohyoid

A

Body of hyoid bone

27
Q

Nerve supply to Geniohyoid

A

C1 fibers through hypoglossal nerve

28
Q

Function of Geniohyoid

A

Elevates hyoid bone and tongue

29
Q

Origin of Genioglossus

A

Superior mental spine

30
Q

Insertion of Genioglossus

A

Tip and entire undersurface of tongue

31
Q

Nerve supply to Genioglossus

A

Hypoglossal nerve

32
Q

Function of Genioglossus

A

1) Draws tongue forward

2) Protrudes tip of tongue

33
Q

Origin of Hyoglossus

A

1) Body of hyoid bone

2) Greater horn of hyoid bone (on upper surface)

34
Q

Insertion of Hyoglossus

A

Sides of tongue

35
Q

Nerve supply to Hyoglossus

A

Hypoglossal nerve

36
Q

Function of Hyoglossus

A

Draws tongue downward

37
Q

A small portion of the Hypglossus may take origin from the lesser horn of the hyoid bone. This muscle slip is called this

A

Chondroglossus

38
Q

Origin of Styloglossus

A

Styloid process

39
Q

Insertion of Styloglossus

A

sides of tongue

40
Q

Nerve supply to Styloglossus

A

Hypoglossal nerve

41
Q

Function of Styloglossus

A

Draws tongue upward and backward

42
Q

Origin of Stylohyoid

A

Styloid process

43
Q

Insertion of Stylohyoid

A

Body of hyoid bone

44
Q

Nerve supply to Stylohyoid

A

Facial nerve

45
Q

Function of Stylohyoid

A

Elevates hyoid bone and tongue

46
Q

This is one of the three large paired salivary glands. It wraps around the POSTERIOR border of the Mylohyoid

A

Submandibular gland

47
Q

The submandibular gland consists of TWO parts

A

1) Superficial part

2) Deep part

48
Q

This part of the submandibular gland is large and lies WITHIN the submandibular triangle and in the submandibular fossa

A

Superficial part

49
Q

This part of the submandibular gland is small and lies SUPERIOR to the Mylohyoid muscle

A

Deep part

50
Q

This is 5cm long and opens into the oral cavity on the sublingual caruncle

A

Submandibular duct

51
Q

This is located lateral to the frenulum of the tongue

A

Sublingual caruncle

52
Q

Innervation of the Submandibular gland

A

Parasympathetic fibers from the FACIAL nerve via the Submandibular ganglion

53
Q

This gland is the SMALLEST of the three major salivary glands. IT lies SUPERIOR to the Mylohyoid muscle in the sublingual fossa.

A

Sublingual gland

54
Q

This empties into the floor of the mouth by 12 short ducts located along the sublingual fold

A

Sublingual gland

55
Q

Innervation of the Sublingual gland

A

Parasympathetic fibers from the facial nerve via the submandibular ganglion

56
Q

Nerves associated with the mandible

A

1) Lingual nerve
2) Glossopharyngeal nerve
3) Hypoglossal nerve

57
Q

Blood vessels associated with the mandible

A

1) Ligual artery
2) Lingual vein
3) Facial artery
4) Facial vein

58
Q

Lymph nodes associated with the mandible

A

1) Submandibular lymph nodes

2) Submental lymph nodes

Gross Anatomy II (7 decks)

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