KCC Muscles Origins and Insertions

what are the two types of tendons?

origin and insertion

Origin tendons stay?

fixed in place and help anchor the muscle

Insertion tendons insert into?

bones that need to be moved. They are pulled inward when the muscle contracts, and pull the bones with them.

Muscles usually pull?

bones towards the origin

What does the flexor of a joint do?

bends (flexes) the joint when it contracts.

What does the extensor do?

straightens (extends) the joint when it contracts.

Frontalis origin

Originates on frontal bone

Frontalis insertion

Inserts on the skin of the eyebrows

Orbicularis Oculi origins

Originates on the orbit (eye socket)

Orbicularis Oculi insertions

Inserts onto the eyelids

Orbicularis Oris origins

Originates on the anterior maxilla and mandible

Orbicularis Oris insertions

Inserts on the lips

Buccinator origin

Originates on the posterior maxilla and mandible

Buccinator insertions

Inserts on the cheek

Zygomaticus (Major and Minor) origins

Originates on the zygomatic bone (cheekbone)

Zygomaticus (Major and Minor) insertions

Inserts onto skin at corners of mouth

Platysma origins

Originates on the lower neck and upper lateral chest

Platysma insertions

Inserts onto lower jaw

Masseter origins

Temporal bone

Masseter Insertion

Mandible

Temporalis Origin

Temporal bone

Temporalis Insertion

Mandible

Sternocleidomastoid origin

Sternum and clavicle

Sternocleidomastoid insertion

Temporal bone (mastoid process)

Trapezius origins

Vertebral column and occipital bone

Trapezius insertions

Clavicle and acromion/spine of scapula

Rhomboideus (Major and Minor) orgins

Vertebral column

Rhomboideus (Major and Minor) insertions

scapula

Serratus Anterior origin

ribs 1-8

Serratus Anterior insertions

Medial/lower border of scapula and pulls scapula around the ribcage

Deltoid origins

Clavicle, acromial process of scapula, spine of scapula

Deltoid insertion

humerus

Supraspinatus origin

Supra-spinous fossa of scapula

Supraspinatus insertion

humerus

Pectoralis major origin

Clavicle and sternum

Pectoralis insertion

humerus

Latissimus Dorsi origins

Thoraco-lumbar vertebrae

Latissimus Dorsi insertion

humerus

Biceps Brachii origin

Scapula (2 origins), Coracoid process and above the glenoid

Biceps Brachii insertion

radius

Brachialis and Brachioradialis origin

Humerus

Brachialis and Brachioradialis insertions

Brachialis: inserts on ulna

Brachio-radialis: inserts on radius

Triceps brachii origin

one on lateral border of scapula and two on humerus

Triceps brachii insertion

Ulna

Erector Spinae origin

Sacral, lumbar, thoracic, and cervical vertebrae; ribs (mostly inferior)

Erector Spinae insertion

Cervical and thoracic vertebrae; occipital bone and mastoid process (mostly superior)

Rectus Abdominis orgin

Pubic symphysis and crest

Rectus Abdominis insertion

Sternum and costal cartilage

Oblique muscles origins

External – ribs 5 through 12

Internal – thoraco-lumbar vertebrae

Transverse  – thoraco-lumbar vertebrae

Oblique muscles insertions

Linea alba

Levator Ani orgins

Pubic arch

Levator Ani insertions

Coccyx (tailbone)

Bulbospongiosus origins

Central tendon of perineum

Bulbospongiosus insertions

Ensheaths penis (males)/vagina (females) into corpus cavernosum

Iliopsoas origin

iliac crest of the ileum

Iliopsoas insertions

Inserts onto the femur

Sartorius origin

Anterior superior iliac spine

Sartorius insertion

Proximal, medial tibia

Gluteus Maximus origin

Sacrum, Coccyx, and posterior iliac crest

Gluteus Maximus insertion

Posterior femur

Tensor Fascia Latae origin

lliac crest

Tensor Fascia Latae insertion

Inserts onto the tibia via fibrous connective tissue called the iliotibial band (tract)

Gracilis origin

Pubic symphysis

Gracilis insertion

medial surface of tibia

Quadriceps femoris origins

on ileum (r. femoris) and femur (vastus)

Quadriceps femoris insertion

insert onto tibia

Hamstrings group origin

ischial tuberosity

Hamstrings group insertion

insert onto proximal tibia

Tibialis anterior origin

Proximal tibia

Tibialis anterior insertion

Medial cuneiform tarsal and first metatarsal

Gastrocnemius and Soleus origin

emur (gastronemius) and tibia/fibula (soleus)

Gastrocnemius and Soleus insertion

Calcaneus via the calcaneal (Achilles) tendon

Flexor digitorum longus origin

Posterior tibia

Flexor digitorum longus insertion

2nd through 5th distal phalanges

Flexor hallucis longus origin

Posterior tibia

Flexor hallucis longus insertion

1st distal phalanx (big toe)