Axial Muscles: Terms AIO

BIO 312: Practical 2

Masseter

Action: Elevates mandible

Origin: Zygomatic

Insertion: Mandible

Temporalis

Action: Elevates mandible

Origin: Temporal

Insertion: Mandible

Masseter

Action: Elevates mandible

Origin: Zygomatic

Insertion: Mandible

Temporalis

Action: Elevates mandible

Origin: Temporal

Insertion: Mandible

Splenius Capitis

Action: Laterally flex neck
Origin: Vertebae

Insertion: Occipital

Sternocleidomastoid

Action: Laterally flex neck

Origin: Sternum

Insertion: Occipital

Diaphragm

Action: Expands the thoracic cavity

Origin: Vertebae

Insertion: Central tendon

External Intercostals

Action: Elevate ribs

Origin: Superior ribs

Insertion: Inferior ribs

Internal Intercostals

Action: Depress ribs

Origin: Inferior ribs

Insertion: Superior ribs

External obliques

Action: Flex vertebral column

Origin: Ribs

Insertion: Ilium

Internal obliques

Action: Flex vertebral column

Origin: Ilium

Insertion: Ribs

Rectus Abdominis

Action: Depress ribs

Origin: Pubis

Insertion: Ribs

Transversus Abdominis

Action: Compress Abdomen

Origin: Ribs

Insertion: Pubis

Iliocostalis

Action: Extend neck

Origin: llium

Insertion: Ribs

Longissimus

Action: Extend neck

Origin: Vertebrae

Insertion: Ribs

Spinalis

Action: Extend neck

Origin: Vertebrae

Insertion: Vertebrae