Forelimb Bones/Muscles/Joints

Is the left scapula the lateral or medial view?

lateral

1 and 2 are the?

dorsal border

13 is the?

serrated face

5 is the?

caudal border

11 is the?

cranial border

6 is the?

spine

3 is the?

infraspinous fossa

12 is the?

supraspinous fossa

9 is the?

scapular notch

8 is the?

supraglenoid tubercle

18 is the?

subscapular fossa

15 is the?

coracoid process

2 is the?

head

1 is the?

greater tubercle

3 is the?

lesser tubercle

13 is the?

intertubercular groove

5 is the?

deltoid tuberosity

10 is the?

lateral epicondyle

8 is the?

medial epicondyle

Unlabeled- right next to 9 little bump

capitulum

9 is the?

trochlea

11 is the?

supratrochlear foramen

8 is the?

styloid process

6 is the?

styloid process

4 is the?

lateral coronoid process

4’ is the?

medial coronoid process

3 is the?

trochlear notch

2 is the?

anconeal process

1 is the?

olecranon

toward or relatively near the head

cranial

toward or relatively near the tail

caudal

Relatively near the surface of the body or the surface of the solid organ

superficial

relatively near the main mass or origin/point of attachment

proximal

away from the main mass or origin/point of attachment

distal

• the movement of one bone in relation to another in such a manner that the angle formed at the joint is reduced

• limb is retracted or folded

• digit is bent

flexion

• the movement of one bone upon another such that the angle formed at their joint increases

• limb reaches out

• digit is straightened

extension

the movement of a part away from the median plain

abduction

the movement of a part toward the median plane

adduction

What are the four regions of the thoracic limb?

thoracic girdle, brachium, antebrachium, and manus

What are the osteological components of the brachium?

humerus

What are the osteological components of the antebrachium?

radius and ulna

What are the osteological components of the manus?

carpal bones, metacarpal bones, and phalanges

What are the osteological components of the thoracic girdle?

scapula and clavicle

What comprises a digit?

bones, muscles, and tissue

what comprises a phalanx?

bones

How many extrinsic muscles are there of the thoracic limb?

8

How many muscles of the ventral neck?

3

Which is NOT an intrinsic muscle group of the thoracic limb?

Caudomedial muscles of the shoulder

• Superficial pectoral m.

• Deep pectoral m.

• Brachiocephalicus m.

• Omotransversarius m.

• Trapezius m.

• Rhomboideus m.

• Serratus ventralis m.

• Latissimus dorsi m.

(Sally Does Bowling On Thursday’s Recently Since Leukemia)

Extrinsic muscles of the thoracic limb

• Deltoideus m.

• Supraspinatus m.

• Infraspinatus m.

• Teres minor m.

( Dylan Surprises Isla Thursday)

Lateral muscles of the shoulder

• Subscapularis m.

• Teres major m.

• Coracobrachialis m.

(Sally Threatened Cheating)

medial muscles of the shoulder

• Biceps brachii m.

• Brachialis m.

(Dylan says- Boys with be Boys)

cranial muscles of the brachium

• Triceps brachii m.

• Tensor fascia antebrachii m.

• Anconeus m.

(The Threats Accelerate)

Caudal muscles of the brachium

• Extensor carpi radialis m.

• Common digital extensor m.

• Lateral digital extensor m.

• Extensor carpi ulnaris m.

• Supinator m.

• Abductor pollicis longus m.

• Brachioradialis m.

(Even Cancerous Leukemia Enhances Sh***y A**h*le Boyfriends)

Craniolateral muscles of the antebrachium

• Flexor carpi radialis m.

• Flexor carpi ulnaris m.

• Superficial digital flexor m.

• Deep digital flexor m.

• Pronator teres m.

• Pronator quadratus m.

(For Fricks Sake, Don’t Presume Purity)

Caudomedial muscles of the antebrachium

From the extrinsic muscles of the thoracic limb, which muscles (2) have an origin at the sternum?

superficial pectoral and deep pectoral

Which extrinsic thoracic limb muscle originates at the clavicular intersection?

Brachiocephalicus

What is the action of the Superficial pectoral m.?

adduct the thoracic limb

What is the termination of the Superficial pectoral m.?

Greater tubercle

What are the actions (2) of the deep pectoral m.?

adduct thoracic limb and pull caudally

What is the termination of the deep pectoral m.?

greater and lesser tubercle

Where does the brachiocephalicus m. terminate?

skull, neck, humerus

What are the actions (2) of the brachiocephalicus m.?

pull thoracic limb cranially and depress head/neck laterally

Which extrinsic muscle of the thoracic limb originates on the wings of atlas?

Omotransversarius

Where is the superficial cervical lymph node?

under Omotransversarius

Where does the Omotransversarius m. terminate?

distal spine of scapula

What are the actions (2) of the Omotransversarius m. ?

pull thoracic limb cranially and depress head/neck laterally

Where does the Trapezius m. terminate?

spine of scapula

Where does the Trapezius m. cervical part originate?

dorsal neck

Where does the Trapezius m. thoraic part originate?

dorsal thorax

What is the action of the Trapezius m.?

elevate thoracic limb

Which two extrinsic muscles of the thoracic limb elevate the limb?

Trapezius and rhomboideus

Where does the Rhomboideus m. terminate?

dorsal border of scapula

What is the action of the Rhomboideus m.?

elevate thoracic limb

Which of the extrinsic muscles of the thoracic limb terminates on the serrated face of the scapula?

Serratus ventralis

Where does the Serratus ventralis m. originate?

cervical vertebrae, thoracic wall

What are the actions (2) of the Serratus ventralis m.?

support and elevate the trunk

What are the actions (3) of the Latissimus dorsi m.?

draw thoracic limb caudally, flex, and extend humeral joint

What is the origin of the Latissimus dorsi m.?

thoracolumbar fascia

What is the origin of the sternocephalicus m.?

sternum

Which muscle of the ventral neck termination is on the bones of the skull?

Sternocephalicus

What is the action of the Sternocephalicus m.?

depress head/neck, draw head/neck laterally

What muscles of the ventral neck originate at the sternum?

all of them

What is origin of the sternohyoideus m.?

sternum

What is the termination of the sternohyoideus m.?

basihyoid bone

What is the action of the Sternohyoideus m.?

pull tongue and larynx caudally

What two ventral neck muscles are used to pull the tongue and larynx caudally?

sternohyoideus and sternothyroideus

What is the origin of the sternothyroideus m.?

cranial aspect of sternum

What is the termination of the sternothyroideus m.?

thyroid cartilage

What is the action of the sternothyroideus m.?

pull tongue and larynx caudally

Where does the deltoideus m. originate?

spine of scapula and acromion

Where does the Deltoideus m. terminate?

deltoid tuberosity

what is the action of the deltoideus m.?

flex the humeral joint

Where does the Supraspinatus m. originate?

supraspinatus fossa

Where does the Supraspinatus m. terminate?

greater tubercle

What is the action of the Supraspinatus m?

extend humeral joint

Where does the Infraspinatus m. terminate?

greater tubercle

Where does the Infraspinatus m. originate?

Infraspinatus fossa

What are the actions (2) of the Infraspinatus m.?

flex the humeral joint, abduct the limb at humeral joint

What is the origin of the Teres minor m.?

caudal border of scapula