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Thorax, Abdomen, Pelvis

Terms in this set (53)

External Intercostals
PA: Ribs - Inferior Border
DA: Ribs Below - Superior Border
I: Intercostal Nerves
A: Approximation of the Ribs
Internal Intercostals
PA: Ribs - Inferior Border
DA: Ribers Below - Superior Border
I: Intercostal Nerves
A: Approximation of Ribs
Innermost Intercostals
PA: Ribs - Inferior Border
DA: Ribs Below - Superior Border
I: Intercostal Nerves
A: Approximation of Ribs
Transversus Thoracis
PA: Sternum - Posterior Surface
DA: Ribs 2-6 - Internal Surface of Costal Cartilages
I: Intercostal Nerves
A: Proprioception
Weakly Depress Ribs
Subcostals
PA: Lower Ribs - Internal Surface Near Angles
DA: Ribs 2 or 3 Below - Superior Borders
I: Intercostal Nerves
A: Similar to Internal Intercostal
Diaphragm
Central Attachment: Central Tendon
DA: Sternal - Sternum - Xiphoid Process
Costal - Ribs 7-12 - Costal Cartilages & Adjacent Areas
Lumbar - Arcuate Ligaments
- LV1-LV3
I: Phrenic Nerve (C3-C5)
A: Depression (Increases Thoracic Volume and Decreases Abdominal Volume)
External Oblique
O: Ribs 5-12
I: Linea Alba
Pubis - Pubic Tubercle
Ilium - Iliac Crest
I: Ventral Rami of Inferior 6 Thoracic Spinal Nerves
A: Unilateral: Trunk Contralateral Rotation
Bilateral: Trunk Flexion
Compress & Support Abdominal Viscera
Internal Oblique
O: Thoracolumbar Fascia
Ilium - Iliac Crest
Inguinal Ligament
I: Ribs 10-12 - Inferior Borders
Linea Alba
Pubis - Pecten via Conjoint Tendon
I: Ventral Rami of Inferior 6 Thoracic Spinal Nerves
A: Unilateral: Trunk Ipsilateral Rotation
Bilateral: Trunk Flexion
Compress & Support Abdominal Viscera
Transverse Abdominal
O: Ribs 7-12 - Costal Cartilages
Thoracolumbar Fascia
Ilium - Iliac Crest
Inguinal Ligament
I: Linea Alba
Pubis - Pubis Crest
Pecten bis Conjoint Tendon
I: Ventral Rami of Inferior 6 Thoracic Spinal Nerves
A: Compress & Support Abdominal Viscera
Rectus Abdominis
O: Pubis - Symphysis
Crest
I: Sternum - Xiphoid Process
Ribs 5-7 - Costal Cartilages
I: Ventral Rami of Inferior 6 Thoracic Spinal Nerves
A: Trunk Flexion
Compress & Support Abdominal Viscera
Quadratus Lumborum
SA: Rib 12 (Medial) - Inferior Border
Lumbar Vertebrae - Transverse Processese
IA: Iliolumbar Ligament
Ilium - Iliac Crest
I: Ventral Rami of T12, L1-L4 Spinal Nerves
A: Unilateral: Trunk Lateral Flexion
Bilateral: Trunk Extension
Depress & Stabilize Rib 12
Levator Ani (Pubococcygeus, Puborectalis & Iliococcygeus)
In: Nerve to Levator Ani (S4)
Inferior Anal (Rectal) Nerve
Coccygeal Plexus
A: Helps to Support Pelvic Viscera
Resists Increases in Intra-Abdominal Pressure
Coccygeus (Ischiococcygeus)
In: Branches of S4 & S5 Spinal Nerves
A: Helps to Support Pelvic Viscera
Coccygeal Flexion
Platysma
SA: Mandible - Inferior Border
Lower Face - Skin & Subcutaneous Tissue
IA: Fascia Covering Superior Parts of Pectoralis Major & Deltoid Muscles
In: Cervical Branch of CN VII - Facial Nerve
A: Draws Corners of Mouth Inferiorly & Widens It
Draws Skins of the Neck Superiorly when Teeth are Clenched
Sternocleidomastoid
SA: Temporal Bone - Mastoid Process
Occiptal Bone - Superior Nuchal Line
IA: Sternal Head: Sternum - Anterior Surface of Manubrium
Clavicular Head: Clavicle (Medial) - superior Surface
In: CN XI - Spinal Accessory Nerve
A: Unilateral: Head Lateral Flexion with Contralateral Rotation
Bilateral: Head Extension
Neck Flexion
Mylohyoid
In: Mylohoid Nerve - Branch of Inferior Alveolar Nerve of CN V3 - Trigeminal Nerve, Mandibular Division
A: Elevates Hyoid Bone, Floor of the Mouth, and Tongue During Swallowing & Speaking
Geniohyoid
In: C1 via CNXII - Hypoglossal Nerve
A:Pulls Hyoid Bone Anterosuperiorly
Shortens Floor of Mouth
Widens Pharynx
Stylohyoid
In: Stylohyoid Branch of CN VII - Facial Nerve
A: Elevates & Retracts Hydoid Bone Thereby Elongating Floor of Mouth
Digastric
In: Anterior Belly: Mylohyoid Nerve - Branch of Inferior Alveolar Nerve of CN V3- Trigeminal Nerve, Mandibular Division
Posterior Belly: Digastric Branch of CN VII - Facial Nerve
A: Depresses Mandible
Elevates & Steadies Hyoid Bone During Swallowing & Speaking
Sternohyoid
In: C1-C3 via a Branch of Ansa Cervicalis
A: Depresses Hyoid Bone After Elevation During Swallowing
Omohyoid
In: C1-C3 via a Branch of Ansa Cervicalis
A: Depresses, Retracts, & Steadies Hyoid Bone
Sternothyroid
In: C2-C3 via a Branch of Ansa Cervicalis
A: Depresses Hyoid Bone & Larynx
Thyrohyoid
In: C1 via CNXII - Hypoglossal Nerve
A: Depresses Hyoid Bone
Elevates Larynx
Longus Colli
In: Ventral Rami of C2-C6 Spinal Nerves
A: Unilateral: Neck Flexion with Contralateral Rotation
Bilateral: Neck Flexion
Longus Capitis
In: Ventral Rami of C1-C3 Spinal Nerves
A: Unilateral: Head Lateral Flexion
Bilateral: Head Flexion
Rectus Capitis Anterior
In: Branches form Loop Between C1 & C2 Spinal Nerves
A: Unilateral: Head Lateral Flexion
Bilateral: Head Flexion
Rectus Capitis Lateralis
In: Branches from Loop Between C1 & C2 Spinal Nerves
A: Unilateral: Head Lateral Flexion
Bilateral: Head Flexion
Posterior Scalene
In: Ventral Rami of C7 & C8 Spinal Nerves
A: Unilateral: Neck Lateral Flexion
Bilateral: Neck Flexion
Middle Scalene
In: Ventral Rami of Cervical Spinal Nerves
A: Unilateral: Neck Lateral Flexion
Bilateral: Neck Flexion
Anterior Scalene
In: Ventral Rami of C4-C6 Spinal Nerves
A: Unilateral: Neck Lateral Flexion with Contralateral Rotation
Bilatera: Neck Flexion
Frontal Belly of Occipitofrontalis
In: CN VII - Facial Nerve
A: Elevates eyebrows, wrinkles skin of forehead, & protracts the scalp
Orbicularis Oris
In: CN VII - Facial Nerve
A: Closes Mouth and compresses & protrudes lips.
Levator Labii Superioris
In: CN VII - Facial Nerve
A: Elevates Upper Lip
Buccinator
In: CN VII - Facial Nerve
A: Presses cheek against molar teeth, therby aiding in chewing. Resists distension.
Depressor Anguli Oris
In: CN VII - Facial Nerve
A: Depresses Corner of Mouth
Zygomaticus Major
In: CN VII - Facial Nerve
A:Draws corner of mouth superolaterally
Zygomaticus Minor
In: CN VII - Facial Nerve
A:Elevates Upper Lip
Orbicularis Oculi
In: CN VII - Facial Nerve
A: Closes Eyelids
Nasalis
In: CN VII - Facial Nerve
A: Compresses or Flares Nostrils
Temporalis
In: Mandibular Division of CN V - Trigeminal Nerve
A: Elevation & Retraction of Mandible
Masseter
In: Mandibular Division of CN V - Trigeminal Nerve
A: Elevation of Mandible
Lateral Pterygoid
In: Mandibular Division of CN V - Trigeminal Nerve
A: Unilaterally: produce side to side movements of the mandible
Bilaterally: Depression & protrusion of mandible
Medial Pterygoid
In: Mandibular Division of CN V - Trigeminal Nerve
In: Unilaterally, Produce Side to side movements of the mandible
Bilaterally: Elevation of Mandible
Genioglossus
In: CN XII - Hypoglossal Nerve
A: Depresses the base of the tongue & protrudes the tongue
Hyoglossus
In: CN XII - Hypoglossal Nerve
D: Depresses the base of the tongue & retracts the tongue
Styloglossus
In: CN XII - Hypoglossal Nerve
A: Elevates the base of the tongue & Retractcs the tongue
Levator Palpebrae Superioris
In: CN III - Oculomotor Nerve
A: Elevates Superior Eyelid
Superior Rectus
In: CN III - Oculomotor Nerve
A: Elevates, Adducts & Medially Rotates Eyeball
Inferior Rectus
In: CN III - Oculomotor Nerve
A: Depresses, Adducts & Laterally Rotates Eyeball
Lateral Rectus
In: CN VI - Abducent Nerve
A: Abducts the Eyeball
Medial Rectus
In: CN III - Oculomotor Nerve
A: Addcuts the Eyeball
Superior Oblique
In: CN IV-Trochlear Nerve
A: Abducts, Depresses & Medially Rotates Eyeball
Inferior Oblique
In: CN III - Oculomotor Nerve
A: Abducts, Elevates & Laterally Rotates Eyeball
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