bio 223 lab 5

Frontalis

Elevates eyebrows

Wrinkles skin of forehead

Occipitalis

Pulls scalp posteriorly

Buccinator

Compresses the cheek

Orbicularis Oculi

Closes eye

Orbicularis Oris

Closes and protrudes the lip

Mentalis

Protrudes lower lip

Platysma

Depresses lower lip

Tenses skin of neck

Zygomaticus Major

Pulls angle of mouth superiorly and laterally

Zygomaticus Minor

Elevates lateral portion of the lip

Temporalis

Retracts and elevates mandible

Masseter

Closes jaw

Elevates mandible

Splenius Capits

Extends, rotates and laterally flexes neck

Sternocleidomastoid

Flexes neck

Scalene

Elevates rib cage

Erector Spinae

Extends vertebral column

External Intercostals

Elevates rib cage

Internal intercostals

Depresses rib cage

Diaphragm

Expands thoracic cavity

Compresses abdominopelvic cavity

Rectus Abdominus

Compresses abdominal cavity

Flexes vertebral column

Internal Obliques

Flexes or bends spin

Compresses abdomen

External Obliques

Flexes or bends spin

Compresses abdomen

Depresses ribs

Transversus Abdominus

Compresses abdominal cavity

Pectoralis Minor

Elevates ribs

Protracts and depresses scapula

Levator Scapulae

Elevates, rotates and retracts scapula

Serratus Anterior

Protracts scapula

Superior rotation of scapula

Trapezius

Rotates scapula posteriorly

Retracts and depresses scapula

Subclavius

Protracts and depresses shoulder

Rhomboid Major

Adducts scapula

Performs downward rotation

Rhomboid Minor

Adducts Scapula

Performs downward rotation

Acromioclavicular Ligament

Acromioclavicular Ligament

Coracoclavicular Ligament

Coracoacromial Ligament

Glenohumeral Ligament

Name the bone

Shoulder

Name the bone

Hip

Iliofemoral Ligament

Ischiofemoral Ligament

Pubofemoral Ligament

Name the bone

Knee

Patellar Ligament

Fibular (Lateral) Collateral Ligament

Fibular (Lateral) Collateral Ligament

Tibial (Medial) Collateral Ligament

Tibial (Medial) Collateral Ligament

Tibial (Medial) Collateral Ligament

Medial Meniscus

Lateral Meniscus

Posterior Cruciate Ligament

Anterior Cruciate Ligament

Muscle cell

Neuromuscular Junction

Mitochondria

Sarcolemma

Myofibrils

Myofibrils

Transverse (T) Tubules

Sarcoplasmic Reticulum

Myosin Myofilaments

Actin Myofilaments

Sarcoplasmic Reticulum

Mitochondria

Transverse (T) Tubules

Sarcomere

Z disc

Actin Myofilaments

Myosin Myofilaments

M Line

H Zone

A Band

I Band