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Palace Learning Muscular System Anatomical Poster - LAMINATED - Muscle Anatomy Chart - Double Sided (18 x 27)

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Cell-to-cell communication is largely facilitated via gap junctions which are located close to openings in the basement membrane, allowing the regulation and propagation of contractile signals across the smooth muscle tissue. The heart is the most important organ of the circulatory system, which helps deliver blood to the body. It works with the lungs to add oxygen to blood and pump this freshly oxygenated blood through the blood vessels and around the body. The parietal lobe: Situated in the middle of the brain, the parietal lobe supports the identification of objects and spatial reasoning. It also plays a role in interpreting pain and touch signals. Planes are often

Concentric contraction, in which the muscle shortens due to generating enough force to overcome the imposed resistance. This type of contraction serves to facilitate any noticeable movement (e.g. lifting a barbell or walking on an incline). The brain is the body’s control center. It forms the core of the central nervous system by creating, sending, and processing nerve impulses, thoughts, emotions, physical sensations, and more.The left and right bronchi: The trachea splits into these tubes, which extend into the lungs and have branches. These smaller bronchi split into even smaller tubes called bronchioles. The tibialis posterior is the deepest muscle of the posterior flexor group. It arises from the posterior surface of the interosseous membrane, the upper two-thirds of the posterior surface of tibia and the posterior surface of the fibula. It then courses downwards to the lower third of the tibia, where it extends into a tendon that passes behind the medial malleolus and passes deep to the flexor retinaculum to enter the plantar aspect of the foot. Here, the tibialis posterior tendon divides into two divisions; a superficial division, which inserts on the medial side of the navicular and the plantar surface of the medial cuneiform bone, and a deep division, which inserts on the intermediate cuneiform and the bases of the second, third and fourth metatarsal bones. Arthritis is a group of conditions affecting the joints. These conditions cause damage to the joints, usually resulting in pain and stiffness due to aging. Arthritis can affect many different parts of the joint and nearly every joint in the body. Rodriguez F, Camacho A, Bordes S, Gardner B, Levin R, Tubbs R. Female ejaculation: An update on anatomy, history, and controversies. Clinical Anatomy. 2020;34(1):103-107. doi:10.1002/ca.23654

Skeletal muscle fibers are bound together by loose areolar tissue, known as endomysium (endo- = within) which contains the usual complement of cells such as fibroblasts and macrophages, as well as small nerve and vascular branches. Shape, Size, and Direction. We also classify muscles by their shapes. For example, the deltoids have a delta or triangular shape. The serratus muscles feature a serrated or saw-like shape. The rhomboid major is a rhombus or diamond shape. The size of the muscle can be used to distinguish between two muscles found in the same region. The gluteal region contains three muscles differentiated by size—the gluteus maximus (large), gluteus medius (medium), and gluteus minimus (smallest). Finally, the direction in which the muscle fibers run can be used to identify a muscle. In the abdominal region, there are several sets of wide, flat muscles. The muscles whose fibers run straight up and down are the rectus abdominis, the ones running transversely (left to right) are the transverse abdominis, and the ones running at an angle are the obliques. Structure of a sarcomere: Colorado Community College System, https://pressbooks.ccconline.o..., CC4) The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person’s body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves. Muscle tissue is also found inside of the heart, digestive organs, and blood vessels. In these organs, muscles serve to move substances throughout the body. Muscular System Anatomy Muscle TypesThe kidneys also produce urine when they remove waste from the blood. Urine flows out of the kidneys through the ureters, then down to the urinary bladder. The cells of cardiac muscle tissue are striated—that is, they appear to have light and dark stripes when viewed under a light microscope. The arrangement of protein fibers inside of the cells causes these light and dark bands. Striations indicate that a muscle cell is very strong, unlike visceral muscles. Long bones have a tubular shape, with a longer longitudinal and a shorter transverse diameter. They are composed mostly of compact bone, while the spongy bone and bony marrow fill the ends of the bones. Examples of long bones include the humerus, ulna, tibia and clavicle.

The most important property of skeletal muscles is its ability to contract. Muscle contraction occurs as a result of the interaction of myofibrils inside the muscle cells. This process either shortens the muscle or increases its tension, generating a force that either facilitates or slows down a movement. Several parts of the lungs help the body take in air, filter it, and then oxygenate the blood. These are: Blood flows from the renal artery into the kidneys. Each kidney contains about a million tiny units for filtration known as nephrons. They help filter waste to the urine and then return the filtered blood to the body through the renal vein.The fibularis tertius, also called the peroneus tertius is a slender muscle that is often described as a part of the extensor digitorum longus. It originates from the medial aspect of the distal third of fibula, the adjacent anterior surface of interosseous membrane and the anterior intermuscular septum and runs downwards along the lateral aspect of the leg. It then extends into a tendon that passes deep to the superior extensor retinaculum, accompanied by the extensor digitorum longus. The tendon of the fibularis tertius then inserts onto the dorsal surface of the base of the fifth metatarsal. In the musculoskeletal system, ligaments stabilize the articulating bones and reinforce the joints. Depending on their anatomic position relative to the joint capsule, ligaments are classified into: Found only in the heart, cardiac muscle is responsible for pumping blood throughout the body. Cardiac muscle tissue cannot be controlled consciously, so it is an involuntary muscle. While hormones and signals from the brain adjust the rate of contraction, cardiac muscle stimulates itself to contract. The natural pacemaker of the heart is made of cardiac muscle tissue that stimulates other cardiac muscle cells to contract. Because of its self-stimulation, cardiac muscle is considered to be autorhythmic or intrinsically controlled. It is not possible to live without these organs. That said, in the case of the paired kidneys and lungs, a person can live without one of the pair.

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