The coracoacromial ligament is a strong triangular band, extending between the coracoid process and the acromion. It is attached, by its apex, to the summit of the acromion just in front of the articular surface for the clavicle; and by its broad base to the whole length of the lateral border of the coracoid process. This ligament, together with the coracoid process and the acromion, forms a vault for the
Bones of the Pectoral Girdle 2. The Upper Limb (Forelimb) 3. Humerus 4. Ulna & Radius 5. Hand Bones 6.
What is a Ligament and how does it work? Ligament is a tough band of fibrous tissue that connects bone to bone or bone to cartilage and supports and strengthens joints. The main functions of ligaments are to keep the bones of the skeleton in a suitable alignment and prevent abnormal movements of the joints. What is a Tendon and how does it work? A tendon is tissue that connects muscles to bones.
The bones of the skull are considered flat bones. The vertebral column supports the head and encloses the spinal cord, which mean that it ranges from the base of the skull down to the pelvis. The vertebral column is composed of 26 individual bones, these bones are referred to as vertebrae. The spinal column is divided into five different areas containing groups of vertebrae: There are seven cervical vertebrae in the neck; twelve thoracic vertebrae in the upper back corresponding to each pair of ribs; five lumbar vertebrae in the lower back; five sacral vertebrae which are fused together to form one bone called the sacrum; four coccygeal vertebrae that are fused together to form the tail-bone. The vertebrae support the head and trunk of the body.
First-class; when the muscle force and resistive force is on different sides of the fulcrum e.g. the head resting on the vertebral column. As the head is raised, the facial portion of the skull is the resistance, the fulcrum is between the atlas and occipital bone, and the effort is the contraction of the muscles of the back. Second-class; when the muscle force and resistive force act on the same side of the fulcrum, with the muscle force acting through the level longer than that through which the resistive force acts - e.g. raising the body
| 1.1. Quadratus labii superior: Is a broad sheet, the origin of which extends from the side of the nose to the zygomatic bone. Its medial fibers form the angular head, which arises by a pointed extremity from the upper part of the frontal process of the maxilla and passing obliquely downward and lateralward divides into two slips. One of these is inserted into the greater alar cartilage and skin of the nose; the other is prolonged into the lateral part of the upper lip, blending with the infraorbital head and with the Orbicularis oris. The intermediate portion or infraorbital head arises from the lower margin of the orbit immediately above the infraorbital foramen, some of its fibers being attached to the maxilla, others to the zygomatic bone.
List the general characteristics of vertebrates. The general characteristics of vertebrates are two unique features of vertebrates: a skull and a backbone. The skull forms a hard case for the brain. The backbone is composed of a series of skeletal segments called vertebrae (singular, vertebra), which enclose the nerve cord. 4.
In terms of structure, the humerus serves as a connection between the scapula and the elbow, where it links to the two lower arm bones. The humerus bone of the upper arm (the arm in anatomy refers only to the top part of the upper limb i.e. between the elbow and the shoulder). Like all bones it gives shape to the body and
This type of joint is one of six synovial joints called the ball and socket joint. A synovial joint is a freely moveable joint with distinctive features. They all have a smooth cartilage covering the ends of the bones and a double layered capsule which encloses the joint cavity. The outer layer is tough and is used for protection against excessive movement in lots of directions, while the inner layer is used to release synovial fluid to help lubricate the joint during motion. This part of the capsule is known as the synovial membrane.
C. Bones of the Knee 1. give strength, stability and flexibility in the knee 2. Tibia a. commonly called the shin bone, runs from the knee to the ankle b. top of the tibia is made of two plateaus and a knuckle-like protuberance called the tibial tubercle c. Attached to the top of the tibia on each side of the tibial plateau are two crescent-shaped shock-absorbing cartilages called menisci which help stabilize the knee 3. Patella a. the kneecap is a flat, triangular bone; the patella moves when the leg moves b. relieve friction between the bones and muscles when the knee is bent or straightened and to protect the knee joint c. kneecap glides along the bottom front surface of the femur between two protuberances called femoral condyles. d. condyles form a groove called the patellofemoral groove 4. Femur a. commonly called the thigh bone; it’s the largest, longest and strongest bone in the body b.