http www.nlm.nih.gov medlineplus ency article 001224.htm

Baker's cysts arise between the tendons of the medial head of the gastrocnemius and the semimembranosus muscles.

It is closely connected to the gastrocnemius muscle and some anatomists consider them to be a single muscle, the triceps surae.

Additional images References External links http www.wheelessonline.com ortho tibialis_anterior

Their feet have only three toes and a similarly reduced number of bones and associated foot muscles they are the only birds with gastrocnemius muscles in the back of the lower legs.

The pectoralis major () (from , breast) is a thick, fan shaped muscle, situated at the chest (anterior) of the human body.

The radial nerve and its branches provide motor innervation to the dorsal arm muscles (the triceps brachii and the anconeus) and the extrinsic extensors of the wrists and hands it also provides cutaneous sensory innervation to most of the back of the hand.

Though a similarly named muscle, the triceps surae, is found on the lower leg, the triceps brachii is commonly called the triceps.

Two additional muscles lie underneath the biceps brachii.

The tibialis anterior overlaps the anterior tibial vessels and deep peroneal nerve in the upper part of the leg.

The medial pectoral nerve pierces the pectoralis minor and the clavipectoral fascia.

The gluteus minimus (or glutæus minimus), the smallest of the three gluteal muscles, is situated immediately beneath the gluteus medius.

It attacks the serratus magnus.

Abduction (50 with hip extended, 80 with hip flexed) gluteus medius tensor fasciae latae gluteus maximus with its attachment at the fascia lata gluteus minimus piriformis and obturator internus.

The gluteus maximus (also known as glutæus maximus or, collectively with the gluteus medius and minimus, the glutes) is the largest and most superficial of the three gluteal muscles.

In most other mammals it also innervates the musculus retractor bulbi, which can retract the eye for protection.

The inferior third is thin and sharp, and serves for the attachment of a few fibers of the Teres major behind, and of the Subscapularis in front.

At the anus, there are two sphincters which control the exit of feces from the body (see internal anal sphincter and external anal sphincter).

The preferred sites are anterolateral aspect of the thigh (vastus lateralis muscle) in infants or the deltoid muscle of the upper arm in young children.

This is the weightbearing part of the knee joint.

Additional images See also References External links

It is part of the levator ani muscle.

The tibialis anterior is responsible for dorsiflexing and inverting the foot.

It is administered into each of two sites in the medial and lateral heads of the affected gastrocnemius muscle.

The iliococcygeus, the most posterior part of the levator ani, is often poorly developed.

With the hip extended, the gluteus medius and gluteus minimus internally rotate the thigh.

They generally originate from the surface of the skull bone (rarely the fascia), and insert on the skin of the face.

This is occasionally muscular, and is the representative of the dorsoepitrochlearis brachii of apes.

The pectoralis major is also responsible for keeping the arm attached to the trunk of the body.

The lateral third of the fossa is smooth and covered by the fibers of this muscle.

Examples The sphincter pupillae , or pupillary sphincter, belonging to the iris in the eye.

The adjacent part of the superior border affords attachment to the Omohyoideus.

The recommended site of administration is the region of the deltoid.

One part, the superficial division, runs over the surface of the Occipitofrontalis muscle.

Intramuscular (also IM or im) injection is the injection of a substance directly into a muscle.

Additional images See also Semimembranosus Biceps femoris References External links PTCentral

And the universal signal is not just raising the corner of the lips to the zygomatic major.

Soon, blue whales were being hunted off Iceland (1883), the Faroe Islands (1894), Newfoundland (1898), and Spitsbergen (1903).

In the most primitive vertebrates, the lampreys and hagfish, the lens is not attached to the outer surface of the eyeball at all.

The tibial nerve innervates the semitendinosus as well as the other hamstring muscles, the semimembranosus and biceps femoris.

They are the lower esophageal sphincter (found in the cardiac region, not an anatomical sphincter) dividing the tract above, and the pyloric sphincter dividing the stomach from the small intestine.

Finally, it enters the orbit through the superior orbital fissure and innervates the superior oblique muscle.

It lies deeper than the biceps brachii, and is a synergist that assists the biceps brachii in flexing at the elbow.

It arises from the middle of the ganglion nodosum and in its course receives a branch from the superior cervical ganglion of the sympathetic.

) The triceps brachii and anconeus extend the elbow, and attach to the posterior side of the humerus.