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110 Cards in this Set
- Front
- Back
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Descending Superficial Pectoral Muscle
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Transverse Superficial Pectoral Muscle
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Deep Pectoral Muscle (Ascending)
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Descending Superficial Pectoral Muscle
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Transverse Superficial Pectoral Muscle
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Deep Pectoral Muscle (Ascending)
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Superficial Pectoral Muscle
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Deep Pectoral Muscle
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Superficial Pectoral Muscle
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Deep Pectoral Muscle
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Pectoantebrachialis Muscle
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Xiphihumeralis (cats only)
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Cleidocephalicus Muscle
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Cleidobrachialis Muscle
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Clavicular Intersection
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Cleidocervicalis Muscle
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Cleidomastodius Muscle
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Cleidocephalicus Muscle
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Clavicular Intersection
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Cleidobrachialis Muscle
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Cleidocervicalis
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Clavicular Intersection
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Cleidobrachialis Muscle
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Sterno-occipitalis Muscle
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Sternocephalicus Muscle
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Sternocephalicus
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Sternohyoideus Muscle
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Sternohyoideus (sternocephalicus reflected)
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Sternocephalicus Muscle
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Sternohyoideus Muscle
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Sternothyroid Muscle
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Osmotransversarius Muscle
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Osmotransversarius Muscle
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Osmotransversarius Muscle
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Osmotransversarius Muscle
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Osmotransversarius Muscle
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Trapezius Muscle
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Trapezius Muscle
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Trapezius Muscle
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Trapezius Muscle
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Trapezius Muscle
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Rhomboideus Thoracis
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Rhomboideus Cervicis
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Rhomboideus Capitis
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A: Rhomboideus Capitis
B: Rhomboideus Cervicis C: Rhomboideus Thoracis |
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Rhomboideus Muscle (Capitis & Cervicis)
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Rhomboideus Muscle (Thoracis)
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A: Rhomboideus Capitis
B: Rhomboideus Cervicis C: Rhomboideus Thoracis |
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Latissimus Dorsi (cutaneous trunci removed)
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Latissimus Dorsi (cutaneous trunci removed)
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A: Latissimus Dorsi
B: Thoracolumbar fascia |
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Latissimus Dorsi
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Serratus Ventralis Muscle
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Serratus Ventralis Muscle
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Serratus Ventralis Cervicis
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Serratus Ventralis Thoracis
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A: Serratus Ventralis Cervicis
B: Serratus Ventralis Thoracis |
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Thoracic limb attachment to the trunk |
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Brachial |
Humerus "Arm" |
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Antebrachial |
Radius & ulna "Forearm" |
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Scapular |
Scapula "shoulder" |
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Extrinsic Muscles |
Muscles that attach the limb to the trunk |
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Intrinsic Muscles |
Muscles located between the bones of the limbs |
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Superficial Pectoral Origin |
Descending: First sternebra (manubrium)
Transverse: Sternebrae 1-3 and fibrous raphe on the ventral midline |
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Superficial Pectoral Insertion |
Crest of the greater tubercle of the humerus
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Superficial Pectoral Innervation |
Cranial pectoral nn. |
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Superficial Pectoral Actions |
- When not bearing weight: Adduct the limb -When bearing weight: Prevent the limb form being abducted |
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Deep Pectoral Origin |
Sternebrae 1-8 and fibrous raphe on the ventral midline; deep abdominal fascia in the region of the xiphoid cartilage
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Deep Pectoral Insertion |
- Lesser tubercle of the humerus |
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Deep Pectoral Muscle Innervation |
Caudal pectoral nn. |
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Deep Pectoral Actions |
- When the limb is advanced & fixed: Pull the trunk cranially - When the limb is not bearing weight: Draw the limb caudally -Adduct the limb - Support the trunk |
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Feline Pectoral Muscles
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It is very difficult to separate the descending and transverse portions of the superficial pectoral muscle
In addition they have a 2 additional pectoral muscles: Pectoantebrachialis and Xiphihumeralis |
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Pectoantebrachialis Origination, Insertion & Action |
Origination: Manubrium
Insertion: Superficial fascia of the proximal end of the antebrachium (ulna)
Action: Draws the arm medially (adducts) |
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Xiphihumeralis Origination, Insertion, & Action |
Origination: Xiphoid process
Insertion: Proximal end the of humerus, deep to the insertion of the deep pectoral m., via a long, thin tendon
Action: Same as deep pectoral muscle |
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Brachiocephalicus Components |
Cleidocephalicus (Cleidocervicalis & Cleidomastoideus) Cleidobrachialis |
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Brachiocephalicus Attachment
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Clavicular Intersection
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Cleidocephalicus Attachment
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Cleidocervicalis: Cervical raphe
Cleidomastoideus: Mastoid process of the temporal bone |
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Cleidocephalicus Innervation |
- Accessory n. (cranial nerve XI) - Ventral brs. of cervical spinal nn. |
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Brachiocephalicus Action |
- Advance the limb - Extend the shoulder joint - Draw the head and neck to the side |
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Cleidobrachialis Attachment |
Distal end of the cranial border of the humerus (dog) or ulna (cat) |
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Cleidobrachialis Innervation |
Brachiocephalic nerve (ventral br. of C6 spinal n.) |
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Sternohyoideus Origin |
- Manubrium - First costal Cartilage |
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Sternohyoideus Insertion
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Basihyoid bone
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Sternohyoideus Innervation |
Ventral brs. of cervical spine nn. |
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Sternohyoideus Action |
Draw the tongue and larynx caudally |
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Sternothyroideus Origin
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First costal cartilage
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Sternothyroideus Insertion
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Caudolateral surface of the thyroid cartilage
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Sternothyroideus Innervation |
Ventral brs. of cervical spinal nn. |
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Sternothyroideus Action |
Draw the larynx & tongue caudally |
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Omotransversarius Origin
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Distal end of the spine of the scapula and acromion
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Omotransversarius Insertion |
- Transverse process of the first cervical vertebra (wing of the atlas)
- Basioccipital bone near the tympanic bulla (FELINE) |
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Omotransversarius Innervation |
Accessory n. (cranial nerve XI) |
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Omotransversarius Action |
- Advance the limb - Flex the neck laterally |
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Trapezius Origin
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- Cervical portion: Median raphe of the neck (C3- C7)
- Thoracic portion: Supraspinous ligament ( T1-T9) |
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Trapezius Insertion
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Spine of the scapula
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Trapezius Innervation |
Accessory n. (cranial nerve XI) |
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Trapezius Action |
- Cervical portion: Draw the scapula craniodorsally - Thoracic portion: draw the scapula caudodorsally - Acting together: Elevate and abduct the thoracic limb |
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Rhomboideus Origin |
Capitis: Nuchal crest of the occipital bone
Cervicis: Median raphe of the neck Thoracis: Spinous processes of T1-T7 |
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Rhomboideus Insertion
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Dorsal border and adjacent surfaces of the scapula
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Rhomboideus Innervation |
Ventral brs. of cervical and thoracic spinal nn. |
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Rhomboideus Action
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- Elevate the forelimb (scapula)
- Draw the scapula against the trunk |
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Latissimus Dorsi Origin |
- Thoracolumbar fascia from the spinous processes of T7 - L7 (dog) ir T4 - T6 (cat)
- Last 2-3 ribs |
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Latissimus Dorsi Insertion
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- Teres major tuberosity of the humerus
- Teres major tendon |
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Latissimus Dorsi Innervation |
Thoracodorsal n. |
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Latissimus Dorsi Action |
- Draw the limb caudally - Flex the shoulder joint |
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Serratus Ventralis Origin |
SV Cervicis: Transverse process of C2/C3 - C7
SV Thoracis: First 7-8 ribs (dog) or 9-10 ribs (cat), ventral to middle region |
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Serratus Ventralis Insertion |
Serrated face of the scapula |
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Serratus Ventralis Action |
- Support the trunk by slinging the body between the forelimbs (along with deep pectoral muscle) - Depresses the scapula |
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Synsarcosis |
Muscular attachments connecting the thoracic limb to the trunk |
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Serratus Ventralis Innervation |
- Ventral brs. of cervical spine nn.
- Long thoracic n. |