Answer the following questions Unit 4DB
Medical Sciences Unit 4DB
Muscles are tissues made of fibers and cells found all over the body, whose contraction and relaxation leads to movement. Muscles in the human body are categorized based on their location and functions. There are three types that include cardiac, smooth, and skeletal muscles. All muscles create a muscular system used to maintain posture, movement, support and coordination. In the human body skeletal muscles makes up 50% of human weight; there are over 500 skeletal muscles in the human body (SEER…, nd). Cardiac muscles are found on the walls of the heart to assist in pumping of the blood. Smooth muscles are found on the walls of blood vessels and respiratory system.
Lower extremity muscles are utilized during standing and walking
Lower extremity muscles are located in the thigh, the leg, the ankle, and the foot. The following are the muscles found in these regions and are used for standing and walking. They are majorly skeletal muscles; quadriceps (Vastus medialis muscle, rectus femoris muscle, and vastus lateralis muscle) and hamstrings are located in the front and behind the thigh respectively. Their movements lead to sitting and standing, they allow one to flex and lift the body (SEER…, nd). Tibialis anterior dorsiflexes the foot, and soleus and gastrocnemius, are also used during standing, and both plantar flex the foot.The thigh is flexed by iliopsoas is an anterior muscle that fl…
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