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2 edition of morphology of the muscles of the shoulder-girdle in monotremes found in the catalog.

morphology of the muscles of the shoulder-girdle in monotremes

William John Stewart Mckay

morphology of the muscles of the shoulder-girdle in monotremes

by William John Stewart Mckay

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  • 34 Currently reading

Published by s.n. in [S.l .
Written in English

    Subjects:
  • Muscles -- Morphology.

  • Edition Notes

    Statementby W. J. Stewart Mckay.
    The Physical Object
    Paginationp. 263-360 :
    Number of Pages360
    ID Numbers
    Open LibraryOL18717278M

    TY - JOUR. T1 - Constraints on the morphological evolution of marsupial shoulder girdles. AU - Sears, Karen. PY - /10/1. Y1 - /10/1. N2 - Throughout their evolutionary histories, marsupial mammals have been taxonomically and morphologically less diverse than their sister taxa the by: Both sets of bones connect the shoulder girdle to the skull. With the loss of these bones, tetrapods acquired a neck, allowing the head to rotate somewhat independently of the torso. This, in turn, required stronger soft-tissue connections between head and torso, including muscles and ligaments connecting the skull with the spine and shoulder Clade: Eotetrapodiformes.

    The clavicle is the bone in the shoulder girdle that is often referred to as the collarbone. It is a curved bone that connects the upper extremity (arm) to the body (the trunk), and provides several attachment sites for muscles and ligaments. The clavicle is unique in that a portion of this bone is not covered by muscle, but only covered by skin. Full text of "Human embryology and morphology;" See other formats.

      The reconstructed muscular sling would correspond to the classical adaptable suspension of the shoulder girdle by means of the m. serratus complex as in other tetrapods (Kardong, ; McGowan, ). An effective muscular sling by m. serratus can also be reconstructed if a more avian‐like model of the shoulder girdle musculature is by: The presence of the zygomatic arch suggests the presence of masseter muscles, which close the jaw and function in chewing. In the appendicular skeleton, the shoulder girdle of therian mammals is modified from that of other vertebrates in that it does not possess a procoracoid bone or an interclavicle, and the scapula is the dominant bone.


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Morphology of the muscles of the shoulder-girdle in monotremes by William John Stewart Mckay Download PDF EPUB FB2

Shoulder girdle and forelimb myology of extant Monotremata Figure 3. X-ray CT images of the left antebrachium of Zaglossus. 1 postaxial side, 2 anterior side, 3 preaxial side, 4. Learn quiz muscles shoulder girdle with free interactive flashcards.

Choose from different sets of quiz muscles shoulder girdle flashcards on Quizlet. The shoulder girdle of turtles has a triradiate morphology. Although its dorsal process represents the scapular blade, the skeletal identities of the two ventral processes remain uncertain.

The muscles of the shoulder girdle Deltoid muscle (m. deltoideus) assigns the shoulder outward to a horizontal plane, with bundles of muscles pull the front hand forward and back - back.

This is a thick triangular muscle covering the shoulder joint and shoulder muscles partially. Eaton TH., Jr Modifications of the shoulder girdle related to reach and stride in mammals.

J Morphol. ; – English AWM. An electromyographic analysis of forelimb muscles during overground stepping in the cat. J Exp Biol. ; – Evans HE. Miller's Anatomy of the Dog. Philadelphia: WB Sauders; Cited by: Stabilize scapula so the shoulder joint muscles will have a stable base from which to exert force for moving the humerus Contract to maintain scapula in a relatively static position during shoulder joint actions Contract to move shoulder girdle & to enhance movement of upper extremity when shoulder goes through extreme ranges of motion.

Monotremes (from Greek μονός, monos ('single') and τρῆμα, trema ('hole'), referring to the cloaca) are one of the three main groups of living mammals, along with placentals and marsupials ().The monotremes are typified by structural differences in their brains, jaws, digestive tract, reproductive tract, and other body parts compared to the more common mammalian : Mammalia.

description and movement in the shoulder girdle posterior. This video is unavailable. Monotremes are endothermic, but they have unusually low metabolic rates and maintain a body temperature that is lower than that of most other mammals their size.

Extant monotremes are represented by 2 families: Ornithorhynchidae (1 genus) and Tachyglossidae (2 genera). Morphology. File Size: 39KB. Additionally, 54 skeletons of subadult and adult marsupials from 25 species were included for comparison.

The embryonic states show a strong similarity to the developmental stage of the breast-shoulder apparatus in the monotremes. In contrast, the adult breast-shoulder apparatus generally corresponds to that in placentals.

The book says they're functionally the same muscle; this is not always the case with muscles named minor and major, sometimes they're totally different muscles that do totally different things.

And like your trapezius is such a big muscle that different parts do different things, you can see how the upper trapezius would pull your shoulder. Chapter Objectives.

After considering the information presented in this chapter, the reader will be able to: 1 Describe kinesiology of the musculature of the shoulder girdle with emphasis on the counterbalancing actions of muscles and their roles in the force-couples that control shoulder motion.

2 Identify the characteristics of each movement impairment syndrome of the scapulothoracic and. Muscles of the Shoulder Girdle Chapter 3. Subclavius Origin: Superior aspect of the first rib Insertion: Inferior surface of distal clavivle Action: Depression and stabilization of the clavicle.

Pectoralis Minor Location: Anterior Origin: ribs Insertion: coracoid process Actions. Shoulder pain is reported to be highly prevalent and tends to be recurrent or persistent despite medical treatment.

The pathophysiological mechanisms of shoulder pain are poorly understood. Furthermore, there is little evidence supporting the effectiveness of current treatment protocols. Although myofascial trigger points (MTrPs) are rarely mentioned in relation to shoulder pain, they may.

Methods. EMG was recorded in 30 healthy subjects from 16 shoulder girdle muscles/muscle sub‐regions (surface electrode: anterior, middle and posterior deltoid, upper, middle and lower trapezius, serratus anterior, teres major, upper and lower latissimus dorsi, upper and lower pectoralis major; fine wire electrodes: supraspinatus, infraspinatus, subscapularis and rhomboid major) using a Cited by: 5.

While the muscles above enumerated comprise all those directly attached to the shoulder-girdle and trunk, they are of course assisted to some extent by the muscles forming the axillary folds, viz., the pectoralis major anteriorly and the latissimus dorsi and teres major posteriorly. The shoulder-girdle is elevated by the upper fibres of the trapezius, levator scapulae, rhomboidei.

Study Identify These Deltoid Muscle Images and Explain Briefly About Them Flashcards Flashcards at ProProfs - Front of card is a picture of the muscle and the back of card lists the muscle's name, insertion, origin and action.

The morphology of the muscles of the shoulder-girdle in monotremes. Volume 9, Page Description of five new species from the Australasian region. Volume 9, Page If you are generating a PDF of a journal article or book chapter, please feel free to enter the title and author information. This activity was created by a Quia Web subscriber.

Learn more about Quia: Create your own activities. Monotremes are unique among mammals because they lay eggs, rather than giving birth to live young. The shells of their eggs are not like the hard shells of birds, but have a leathery shell, similar to the shells of reptile eggs.

Monotremes retain their eggs through about two-thirds of the developmental period, and then lay them in nests. Increase Font Size Toggle Menu. Home; Read; Sign in; Search in book: Search.

Pectoral girdle consists of the Clavicle (collar bone) and Scapula (shoulder bone). Pelvic Girdle consists of Ilium, Ischium and pubis bones. The Pelvic Girdle: The Pectoral Girdle area.Natural size, in SOMSO-Plast.

Showing the network of blood vessels and nerves in the right arm. The following muscles are removable: deltoid muscle, lateral head of the triceps muscle of the arm, short and long extensor muscle of the radial wrist with brachioradial muscle, round pronator muscle - flexor muscle of the radial wrist - long palmar muscle, superficial flexor muscle of the fingers.