CBLG101 - Chapter 10 The Muscle System

Shape (eg. deltoid = triangle; trapezium = trapezoid) and relative size (eg. Maximus = largest, minimus = smallest, longus = long)

Direction of fibers or fascicles - eg. Rectus (fibers run straight), transversus and oblique (fibers run at angles to an imaginary defined axis) and ACTION (eg. flexor or extensor = muscles that flex or extend)

Location (eg. Bone or body region associated with the muscles) and number or origins (eg. biceps = 2 origins, triceps = 3 origins)

All of the above plus location of attachments (named according to point of origin or insertion)

Circular and convergent

Parallel and fusiform

Unipennate, Bipennate, Multipennate

All of the above

Fascicles arranged in concentric rings (e.g., orbicularis oris)

Fascicles converge toward a single tendon insertion (e.g., pectoralis major)

Fascicles parallel to the long axis of a straplike muscle (e.g., sartorius)

Spindle-shaped muscles with parallel fibers (e.g., biceps brachii)

Fascicles converge toward a single tendon insertion (e.g., pectoralis major)

Fascicles parallel to the long axis of a straplike muscle (e.g., sartorius)

Spindle-shaped muscles with parallel fibers (e.g., biceps brachii)

Short fascicles attach obliquely to a central tendon running the length of the muscle (e.g., rectus femoris)

Fascicles parallel to the long axis of a straplike muscle (e.g., sartorius)

Spindle-shaped muscles with parallel fibers (e.g., biceps brachii)

Fascicles converge toward a single tendon insertion (e.g., pectoralis major)

Short fascicles attach obliquely to a central tendon running the length of the muscle (e.g., rectus femoris)

Fascicles parallel to the long axis of a straplike muscle (e.g., sartorius)

Spindle-shaped muscles with parallel fibers (e.g., biceps brachii)

Short fascicles attach obliquely to a central tendon running the length of the muscle (e.g., rectus femoris)

Fascicles converge toward a single tendon insertion (e.g., pectoralis major)

Short fascicles attach obliquely to a central tendon running the length of the muscle (e.g., rectus femoris)

Spindle-shaped muscles with parallel fibers (e.g., biceps brachii)

Fascicles parallel to the long axis of a straplike muscle (e.g., sartorius)

Fascicles converge toward a single tendon insertion (e.g., pectoralis major)

Orbicularis oris (sphincter muscle that encircles the mouth)

Pectoralis major (large muscle of the chest)

Sartorius (flexing muscle in the anterior compartment of the thigh)

Biceps brachii (major flexor at the elbow)

Orbicularis oris (sphincter muscle that encircles the mouth)

Pectoralis major (large muscle of the chest)

Sartorius (flexing muscle in the anterior compartment of the thigh)

Biceps brachii (major flexor at the elbow)

Orbicularis oris (sphincter muscle that encircles the mouth)

Pectoralis major (large muscle of the chest)

Sartorius (flexing muscle in the anterior compartment of the thigh)

Biceps brachii (major flexor at the elbow)

Orbicularis oris (sphincter muscle that encircles the mouth)

Pectoralis major (large muscle of the chest)

Sartorius (flexing muscle in the anterior compartment of the thigh)

Biceps brachii (major flexor at the elbow)

Biceps brachii (major flexor at the elbow)

Extensor digitorum longus (extends lateral four toes and dorsiflexes foot)

Rectus femoris (flexes the thigh at the hip joint and extends leg at the knee joint)

Deltoid (Muscle in shoulder joint and the major abductor of the arm)

Biceps brachii (major flexor at the elbow)

Extensor digitorum longus (extends lateral four toes and dorsiflexes foot)

Rectus femoris (flexes the thigh at the hip joint and extends leg at the knee joint)

Deltoid (Muscle in shoulder joint and the major abductor of the arm)

Biceps brachii (major flexor at the elbow)

Extensor digitorum longus (extends lateral four toes and dorsiflexes foot)

Rectus femoris (flexes the thigh at the hip joint and extends leg at the knee joint)

Deltoid (Muscle in shoulder joint and the major abductor of the arm)

Circular

Parallel

Bipennate

Fusiform

Convergent

Unipennate

Multipennate

Epicranius, frontal belly

Orbicularis oculi

Zygomaticus

Orbicularis oris

Masseter

Temporalis

Sternothyroid

Platysma

Sternocleidomastoid

Pectoralis minor

Serratus anterior

Pectoralis major

Intercostals

Trapezius

Deltoid

Triceps brachii

Biceps brachii

Brachialis

Pronator teres

Brachioradialis

Flexor carpi radialis

Palmaris longus

Rectus femoris

Vastus lateralis

Vastus medialis

Fibularis longus

Extensor digitorum longus

Tibialis anterior

Rectus abdominis

Internal oblique

Transversus abdominis

External oblique

Tensor fasciae latae

Sartorius

Adductor longus

Gracilis

Gastrocnemius

Soleus

Iliopsoas

Pectineus

Triceps brachii

Brachialis

Gastrocnemius

Soleus

Fibularis longus

Calcaneal (achilles) tendon

Iliotibial tract

Brachioradialis

Extensor carpi radialis longus

Flexor carpi ulnaris

Extensor carpi ulnaris

Extensor digitorum

Epicranius, occipital belly

Trapezius

Sternocleidomastoid

Deltoid

Infraspinatus

Teres major

Rhomboid major

Lastissimus dorsi

Gluteus medius

Gluteus maximus

Adductor magnus

Biceps femoris

Semitendinosus

Semimembranosus