Ulna

As I closely observed the cadaver, this muscle has two heads; the superficial head arising from the medial epicondyle of the humerus and the deep head arising from the ulna head. These two heads has parallel muscle fibers inserting directly onto the middle of the radius. It is innervated by the median nerve arising from the medial epiconedyle that passes between the two heads pronator teres. This nerve gets pinched between…

the elbow, it allows the lower part of the arm to move in a wide range of directions without any difficulty. Ulna: The ulna is attached to many muscles in the arm to perform movements of the arm, hand and wrist. The ulna is necessary to take part in every day functions like throwing items and moving the arm. Radius: The radius is one of the forearm bones in the arm, it rotates around the ulna and allows the arm to perform flexible movements and allows it to rotate easily. Carpals: The carpals…

Time Span Video Content Audio Content 0:00-0:30 Full screen shot of the humerus during the introduction The Humerus is both the largest bone in the arm and the only one located in the upper arm. Many of the powerful muscles that help move the shoulder and forearm, the elbow, are attached to the Humerus. The Humerus is very essential to a variety of movements of the arm, including throwing, lifting, and even writing. 0:30-1:00 Demonstrate all parts of the humerus bone. There are many parts of…

the bones by tendons, muscles move those bones in several ways. The bones that create the elbow are included:  Humerus: This long bone extends from the shoulder socket and joins the radius and ulna to form the elbow.  Radius: This forearm bone runs from the elbow to the thumb side of the wrist.  Ulna: This forearm bone will run from the elbow to the “pinkie” side of the wrist. Functions - The elbow can move…

The humerus is classed as a long bone and is located in the upper arm, connecting the shoulder to the elbow. The long bone as suggested by its name is long in structure, meaning they are considerably longer then they are wider. The structure for the humerus is typically similar to all structures of long bones, with a shaft, bone ends and membranes. Dyaphysis or the shaft of the humerus makes up the long axis of he bone and is constructed of very high density compact bone (Merieb, 2010). This…

brain, heart and lungs Cranium Sternum and 24 ribs 24 Vertebrae, Sacrum and Coccyx Structure of the Appendicular skeleton Figure 2 The Appendicular skeleton is made up of the upper and lower limbs. Clavicle and Scapula Humerus, Radius and Ulna Carpals, Metacarpals, Phalanges and Sesamoid Two Pelvis bones Femur, Tibia, Patella and the Fibula Tarsals and Metatarsals Bone Type Explanation Of Bone Example Of Bone Long Bones It is hard Dense They provide the strength, structure and…

CHARACTERS OF PRIMATES Introduction – The members of the order primate are characterized by having forward-facing eyes and very flexible fingers, legs and arms that assist them to lead an arboreal life which arefound allover the world. They have large brain in comparison to other mammals. They show a combination of primitive and specialized characters. They are primarily arboreal and return to land as a secondary condition…

Vertebrates’ forelimbs are anterior appendages of animals that are in the subphylum vertebrata. There are several bones that makes up a forelimb includes the radius, ulna, humerus, carpal, metacarpals, and phalanges. The humerus is a single heavy bone which articulates with the body and forms the foundation of the limb; the radius and ulna are lighter and provides support in addition to a greater range of movement (AMNH Plaque). The carpals, metacarpals, and phalanges are farthest away from the…

profundus a. The flexor digitorum profundus originates on the proximal portion of the ulna near the interosseous membrane, and inserts onto the base of the phalanges (II-V) (Starkey, et al., 2011). b. Its main functions are DIP, PIP, and wrist flexion (Starkey, et al., 2011). 3. Flexor digitorum superficialis a. The flexor digitorum superficialis originates on the humeral medial epicondyle, coronoid process of the ulna, and the radial head. It inserts onto…

ends (Blair, Clowers & Stolov, 2007). c. Transradial amputation The below elbow amputation passes through both bones of the forearm (radius and ulna) (Blair, Clowers & Stolov, 2007). The more proximal the amputation, the greater the muscular covering of these two bones. The more distal the amputation, the more irregular the shape, for the radius and ulna are relatively more exposed (Blair, Clowers & Stolov, 2007). d.…