Name the principal axial muscles of the body and describe their origins insertions actions and inner

Suppose we have two muscles of the same strength crossing and acting on the same joint. They have very impressive names for such little muscles. Cranial nerves related to the innervation of the head muscles include the oculomotor, trochlear, abducens and the hypoglossal nerves.

You should be anterior to the ear canal, below the zygomatic arch. The Head-neck Sensory Motor System. During a clinical examination, horizontal eye movements strabismus or an absent pupillary light reflex PLR may indicate a problem.

Taste buds can also be found in the soft palate, pharynx, larynx, lips and cheeks. This and the trapezius next week are the superficial lateral neck muscles. Thoracodorsal nerve - dorsal view Functions Upper Limb Movements The latissimus dorsi supports various different movements of the shoulder.

It is also part of a group together with the vagus and accessory nerves that passes through the jugular foramen which is termed the vagus group. Trunk Movements When the humerus is fixed, the contraction of the latissimus dorsi leads to two different movements of the trunk.

Active and passive restriction is likely from a bony or soft-tissue blockage, and the atrophy present will be most likely from disuse. What are the actions of this muscle. Ramus of the mandible p. However, the accessory nerve also contributes to the cervical spinal cord and spinal root through the foramen magnum providing innervation to muscles of the neck.

This restriction of neck rotation should be considered a primary sign of levator scapulae TrP's. The muscular effort contraction is applied to the bone at the insertion of the muscle and produces motion if the effort exceeds the resistance load.

Once you have located the TrP it can be worked with the fingers but this is diffcult and tiring. Strength of flexion can be tested from the back of the patient by placing the stabilizing hand on the patient's shoulder so that the anterior deltoid may be palpated during testing.

It passes through the internal acoustic meatus and into the petrosal bone. Assume also that one is attached farther from the joint and one is nearer. Study the origins, insertions, and actions of the: There are a number of intermediate branches which separate from the main facial nerve inside the facial canal including the greater petrosal nerve, the stapedial nerve motor and the chorda tympani.

The cranial root of the accessory nerve actually contributes to the vagus nerve and to the striated muscles of the pharynx, larynx, palate and oesophagus. Spasm, contractures, fracture, and dislocation are the common causes of motion restriction and muscle weakness.


At times a muscle may be so prominent that the name of the body region alone can identify it. Joint motions of the shoulder and shoulder girdle, along with the prime movers and major accessories, are listed in Table The next most cranial is the Optic nerve II which runs from the eyes to the thalamus.

For example how the muscle moves or what it moves. The weight of the forearm plus the weight in the hand is the resistance. Also, continued daily massage with the fingers, especially given the leverages involved, is very tiring to the hands and fingers. Flexors are mainly on medial and anterior surfaces.

The Muscles of Mastication

Sculpt around its edges, exploring the entire surface. What role does each of the following play during the contraction of muscle. D, C ascorbic acidK, A What role do the following play in protein synthesis. A lever may be defined as a rigid rod that moves about on some fixed point called a fulcrum.

There are 12 pairs of cranial nerves and these pairs of nerves passage through foramina in the skulleither individually or in groups. The nerve is composed of general somatic efferent fibres which control the intrinsic and extrinsic muscles of the tongue together with other nerves including the lingual nerve, facial nerve, lingual branch of the glossopharyngeal nerve and the vagus nerve.

The examiner's active hand grips the patient's anterior lower arm. Olfactory cells are continuously replaced and are only viable sensory cells for between 30 - 60 days. The sensory fibre components have their cell bodies located in ganglia outside the central nervous system and the motor fibre element have their cell bodies within the central nervous system.

The serratus anterior is a muscle that originates on the surface of the 1st to 8th ribs at the side of the chest and inserts along the entire anterior length of the medial border of the serratus anterior acts to pull the scapula forward around the thorax.

The muscle is named from Latin: serrare = to saw, referring to the shape, anterior = on the front side of the body. The muscles of the shoulder can be categorized into three topographic units: the scapulohumeral, axiohumeral, and axioscapular groups. Serratus anterior forms part of the latter group together with rhomboid major.

Facial Muscles. This interactive diagram of muscles of human facial expression is an anterior view of some of the muscles and tissues of the head (useful for Indian head massage courses). Click on the pink questions for immediate answers. Perineal Body - a fibromuscular structure located between the vagina/testicles and the anus, attaching to the sides of the ischiopubis rami by the deep transverse perineal muscle.

It is know as the central tendon of the pelvis because many pelvic floor structures intersect with the perineum at this structure. Several muscles of the arm and forearm have origins and insertions on the radius to provide motion to the upper limb. These movements are essential to many everyday tasks such as.

Actions, Insertions, Origins - 34 cards; ACTIONS (LEG) - 16 cards; Active Transport - 7 cards; Anatomical Body Names - 39 cards; anatomical body parts - 49 cards; Axial Muscle Lists - 26 cards; Axial Muscles - 26 cards; Axial Musculature - 41 cards; Axial Region - 27 cards.

Name the principal axial muscles of the body and describe their origins insertions actions and inner
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Serratus anterior muscle - Wikipedia