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Quizlet muscular system
Quizlet muscular system
Skeletal and muscular system
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The function of bones in the body is to support and protect vital organs, keeps us upright, provide structure, produce red and white blood cells and store minerals.
The hamstring muscles begins underneath the Gluteus Maximums on the bottom of your pelvic bone, this bone is called the Ischial Tuberosity. The muscles then course down the back of your thigh. The biceps femoris muscle attaches past your knee on the outside part of your leg. The semimembranosus and semitendinosus attach on the inside part of your knee and shin bone. The hamstring is attached to the back side of the femur. The femur bone is the longest, strongest and heaviest bone in the human body.
The quadricep muscle is attached to the femur bone at the top part of the muscle
The first activity was isolating the gastrocnemius muscle. A cut between the thigh and hip was made so the skin can be pulled down past the lower leg. Then the tendon was cut away from the bone of the heel and one end of the nine-inch string was tied to the tendon. This led to the isolation of the sciatic nerve, found between the hamstring and heel on the lateral side of the thigh. Using fingers, the seams along the quadriceps and hamstring underwent a blunt dissection. In doing so, the glass-dissecting probe was used to free the sciatic nerve embedded in the tissues. A four-inch string was inserted between the nerve and the tissues. Then the transducer was calibrated using a fifty-gram block under the “Frog Muscle” program. Parameter of CAL 1 was changed to zero grams and CAL 2 was changed
The gluteus maximus originates from both the ilium and the sacrum and inserts on the femur. The gluteus minimus abducts and rotates the thigh outward. The biceps femoris originates from the tuberosity of the ischium and is responsible for abducting the thigh and flexing the hindlimb or in humans the thigh/leg. The gastrognemius originates from the lateral sesamoid bone of the femur and extends the hindfoot in minks and the calves in humans (Scott).
This week’s reading was about Langston Hughes and Zora Neale Hurston’s, “A Mule Bone”. This play expresses many conflicts that go on in small as well as large communities. The setting of this play however is in Eaton, Florida is the community in which Hurston is from. It describes the many conflicts that people have with certain relationships or religions.
“Your hamstring muscles are located on the posterior, or back, side of your thigh. The muscles run down the length of your thigh, from the bottom of your pelvis to
The surfaces of the joint are organised to allow only back and forth motion such as bending and straightening. This type of joint can be found between your upper arm and your lower arm, in the elbow. This type of joint is incredibly important as it allows an up and down movement, without this type of joint, we wouldn’t be able to move our arm up and down. Muscles are attached to this type of joint by tendons to allow it to contract and relax and be able to move the bone within this joint. Ligaments attach the bones in a hinge joint together, for example, the humerus and the tibia are joined by ligaments but they also have antagonist muscle pairs attached to them by tendons which allow the bone to move by contraction and relaxation of the muscles. This type of joint mainly includes long bones as it’s necessary for movement in the skeletal
The Achilles tendon is one of the largest and strongest tendons in the human body. It is a tough band of fibrous tissue that connects the calcaneus (heel bone) to the muscles at the back of the calf using the gastrocnemius and soleus muscles. Leg muscles are known as the strongest muscles in the body because there are able to pull against the force of gravity in order to keep the body upright and in balance. The Achilles tendon is an important tendon in terms of mobility because it keeps the elastic energy required for running, jumping and walking. When an athlete tightens their calf muscles, it pulls the Achilles tendon which in turn pushes the foot down. Within the body each Achilles tendon is conditional to an athlete’s entire body weight with each movement taken. Generally depending on the speed, pace and additional weight being carried or pushed down, each Achilles tendon may be conditional to nearly three to twelve times the athlete’s body weight during a sprint. The Achilles tendon is very different from other tendons in the body. Compared to other tendons which have a covering that minimises wear and tear to the tendon by friction, the Achilles tendon contains a softer tissue that covers it. Since there is also a short blood supply to the tendon, it is highly prone to injuries and can require a long time to heal.
Bones of the skeletal system serve as storage compartments for vital minerals like phosphorus and calcium. Excessive calcium in the blood is stored in bones. Calcium is released from the bones into the blood when there are deficient amounts of it in the blood.
Demonstrating the muscles being used, the lower extremities and a few in the upper extremities due to the bar used. The gluteus maximus is one of the primary movers in hip extension. This muscle is used twice in the exercise, at the start when he raises the bar and then towards the end, when he is in fully erect position. The hamstrings, which consist of the bicep femoris, semimembranosus, and semitendinosus, work together to stabilize and flex the knee and also aid in hip extension. In the work out, the hamstrings help flex the knee in certain occasions and at the end when exerting superiorly with the bar over the head. The hamstrings collaborate with the gluteus maximus to lengthen the hips throughout the initial and final stand. The quadriceps contributes in the act and also helps with the extension of the knee and as a stabilizer for the knee. The vastus lateralis, vastus intermedius, vastus medialis and rectus femoris work together to start with the initial pull and standing movement, which extends the knee. He uses his calves, synergist to knee extension, entailing the soleus and the gastrocnemius while planter flexing the foot. This movement occurs when he jumps upwards and lifts his heels off the
The fibula is a leg bone located on the lateral side of the tibia, with which it is connected above and below. It is the smaller of the two bones, and the slenderest of all the long bones, and plays a significant role in stabilizing the ankle and supporting the muscles of the lower leg. The fibula is the smaller, non-weight bearing, of the two bones in the lower leg, while the tibia is the larger, weight bearing bone. The fibula and tibia moves very little relative to each other and the joints that it forms contribute significantly to the function of the lower leg. The joint it forms permit the fibula to adjust its position relative to the tibia, increasing the range of motion of the ankle. Fibular fractures are not often a severe injury, because the bone is supports only about 17% of the body weight.
Although your teeth are also considered part of your skeletal system, they are not counted as bones. Your teeth consist of enamel and dentin. Enamel is the strongest substance in your body. The main priority of the skeletal system is to provide support for the body. Without bones our body would be in a pile of guts and mush on the floor. Your skeleton furthermore assists to protect your internal organs and fragile body tissues. The brain, eyes, heart, lungs and spinal cord are all sheltered by your
However some of the basic bone functions include storing of crucial nutrients, minerals and lipids, producing red blood cells for the body, protect the organs such as heart, ribs and the brain, aide in movement and also to act as a buffer for pH. With the differences in all of the bones there are four things that remain the same in each bone, their cells. Bones are made up of four different cells; osteoblasts, osteoclasts, osteocytes and bone lining cells. Osteoblasts produce and secrete matrix proteins and then transport the minerals into the matrix. Osteoclasts are responsible for the breaking down of tissue. The osteoblasts and osteoclasts are both responsible for remodeling and rebuilding of bones as we grow and age. The production of osteoclasts for resorption is initiated by the hormone, the parathyroid hormone. Osteocytes are the mature versions of osteoblasts because they are trapped in the bone matrix they produced. The osteocytes that are trapped continue making bone to help with strength and the health of the bone matrix. The bone lining cells are found in the inactive bone surfaces which are typically found in
On the other hand, the rectus femoris exhibited a biphasic force pattern. This means in the first half of swing, rectus femoris force increased with running speed in response to larger moments required in hip flexion and knee extension. Whereas during stance, it produced a knee-extensor moment to complement the action of the combined Vastus medialis, intermedius, and lateralis. Also during acceleration, iliopsoas , gluteus maximus, gluteus medius, hamstrings, and rectus femoris all developed significantly larger peak forces throughout the stride cycle. Specifically, the peak forces of gluteus maximus and hamstring because they doubled during the terminal swing. During deceleration phase of stance, the largest contributor to both braking and support of the body mass center is the quadriceps muscle group. The quadriceps muscle group (i.e., vastus lateralis, vastus intermedius, vastus medialis, and rectus femoris) is considered the largest contributor to deceleration of the body mass center during early stance. The soleus is not the largest
The Hamstring is one of the bigger muscles in the human body, and is one of the stronger groups of muscle throughout the human body. The hamstring is also one of the most commonly injuries that most athletes will or have run into throughout his or her athletic career. The hamstring is strung cross and acts upon two separate joints in the lower body. The hamstring is attached to the knee and hip joints which allows the hamstrings to preform hip extension, knee flexion. The most common injury that happens to the hamstring is the straining of the hamstring which is also graded on a scale of levels ranging from grade one to grade three strains. The hamstring can also be torn or pulled.
Three major bones of the leg come together and form the knee joint, These bones are the femur, the tibia, and the fibula. The four major ligaments of the knee hold these bones together. The four major ligaments are the lateral collateral ligament, medial collateral ligament, anterior cruciate ligament, and the posterior cruciate ligament. The ACL sits in the middle of the knee joint. Its main function is to prevent the tibia from sliding out in front of the femur.
The Skeletal System, also known as the Skeleton make up a framework that support the body and protect the organs. The Skeleton consists of the bones and joints of the body. In the human body there is 300 bones at birth, these then fuse together to make 206 bones in a fully grown adult. The Skeleton is made up of two divisions: The axial and appendicular Skeleton.