Savannah started a 200-meter dash and fell to the ground in pain.Examination of her right leg revealed the following symptoms: inability to plantar flex the foot against resistance, normal ability to evertthe foot, abnormal dorsiflexion of the foot, and abnormal bulging ofthe calf muscles. Explain the nature of her injury

Q: Explain the role of joints in skeletal movement

A: Joints are practical intersections between at least two bones. Joints tie the skeleton together, to…

Q: Explain the function of the menisci of the knee.

A: The menisci structure of the knee is made up of medial and lateral components and is anatomically…

Q: Watch this animation (http://openstaxcollege.org/l/elbowjoint1) to learn more about the anatomy of…

A: The elbow is a hinged joint made up of three bones, the humerus, ulna, and radius. The ends of the…

Q: Describe the difference between a muscle’s origin andits insertion.

A: The cardiac muscle tissues and the smooth muscle tissues of the human are involuntary in nature. The…

Q: When the left and right ________ contract, they flex the head and neck. a. sternocleidomastoid b.…

A: Muscle is a soft tissue that contains actin and myosin protein filament that are responsible for…

Q: A fascicle is bounded and defined by:-a. the endomysium. b. the fascia. c. the myofilaments. d. the…

A: The soft tissue-like structure found in the majority of the animals including human beings is known…

Q: Describe the origin, insertion, action, and innervation of the muscles that move the mandible and…

A: The mandible which is part of the facial skeleton is located inferiorly and is considered the…

Q: Describe the muscle groups that cause flexion andextension of the wrist.

A: To Explain: What is extension and flexion and the muscle groups that extend and flex the wrist.…

Q: Describe the origin, insertion, action, and innervation of the intrinsic muscles of the foot that…

A: Intrinsic muscles of the foot are only two in number and are responsible for helping the extrinsic…

Q: Explain why the adductor longus muscle is a more effective hip adductor than the pectineus?

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Q: Why do the muscles of facial expression move the skin ratherthan a joint?

A: The origins of the muscles of facial expression are on the surface of the skull i.e. lie within the…

Q: Which motion moves the bottom of the foot away fromthe midline of the body?a. elevationb.…

A: Synovial joints (joint between two bones that move against each other) promote many types of…

Q: What structural feature of the arches allows them to absorb shocks?

A: The appendicular skeleton is the skeleton portion of vertebrates that consists of bones and supports…

Q: Muscles in the anterior compartment of the lega. evert the foot.b. dorsiflex the foot and extend the…

A: The muscles that are present in the anterior compartment of the foot are:- 1) Extensor digitorum 2)…

Q: State the bone features where the following musclesattach to the skull: neck muscles, throat…

A: The muscular system consist of skeletal, smooth and cardiac muscles. It helps in maintaining the…

Q: Determine the kind of flexibility exercises thatwould be indicated for a patient with carpal tun-nel…

A: The wrist and the hand are connected by a passage called carpal tunnel which consists of tendons,…

Q: Explain how an anticholinesterase drug affects skeletalmuscle function.

A: The muscular system is one of the major organ systems in the body that contains three forms of…

Q: List and demonstrate the types of movements that occur at diarthroses?

A: Synarthrosis is the common movable joint in the body. These are also known as diarthrosis and have a…

Q: Describe the bony articulations and movementsspecific to shoulder joint rotation during the…

A: Bony articulations of the shoulder joint are the glenohumeral joint itself and the acromioclavicular…

Q: Name the bone of the arm.

A: Bone is the substance that forms skeleton of the body . It's composed of calcium phosphate and…

Q: In the middle of a stride, you have one foot on the groundand you are about to swing the other leg…

A: In the human body, physiological actions like walking running, etc. require muscle actions. The…

Q: Why is distal tibia more prone to fractures from torsional loads?

A: Anatomically, tibia bone is present just after the femur.  It is one of the two bones (tibia and…

Q: In individuals with osteoarthritic signs, limited to the medial compartment of the knee, how do they…

A: Osteoarthritis is the common form of arthritis in which the protective cartilage that cushions the…

Q: Discuss the joints involved and movements requiredfor you to cross your arms together in front of…

A: The joints are the site, where the ends of the bones are joined to the other bones. There are many…

Q: In an adult, stroking of the foot on the lateral side of the plantar surface,turning 90 degrees and…

A: The foot intrinsic muscle contains both proximal and distal attachments within the foot. The…

Q: How do the tibia and talus maintain their correct positioning inthe talocrural joint?

A: Tibia and talus are present in the ankle joint which is also known as talocrural joint.

Q: Consider the movements of plantar flexion and dorsiflexion. Propose a reason why there are far more…

A: The ankle joint observes four types of movements, two of which are dorsiflexion and plantarflexion.…

Q: 5. This crosses the "heel" of the ankle joint and then spreads out along the "sole" of the foot to…

A: The Plantar aponeurosis is a Deep fascia, who covers the sole, . It is a dense regular connective…

Q: A) Identify the movements the arrows A and B point to.. B) Which joint do these movements occur at?

A: A joint in the skeletal anatomy of the body is any region that represents the point of contact…

Q: When running on the balls of one’s feet, what muscle resists dorsiflexion of the talocrural joint…

A: Talocrural joint This joint is formed between the distal tibia-fibula and the talus. It is also…

Q: Explain how vertebral deformities develop in musculardystrophy.

A: Muscular disorder Primary function of muscular system includes, maintaining posture, muscle tone,…

Q: A skier breaks his ankle. As part of his treatment, the ankle and legare placed in a plaster cast.…

A: A fracture is a breaking of the bone partially or completely. Although the bones are rigid but can…

Q: What is the primary function of the tibia?

A: The tibia is one of two bones that make up the leg, also the second largest bone in the body. The…

Q: Henry, a wildlife photographer, noticed that the great toe of his left foot had bent toward his…

A: Yes, the observation of Henry was correct, his great toe of his left foot had bent toward his other…

Q: Which of the cruciate ligaments are stressed more during deep squats?

A: The knee joint is highly complex and the largest joint in the human body. The knee joint is formed…

Q: How can the deltoid extend and flex the arm?

A: The triangular muscle in the shoulder girdle is the deltoid muscle. It is composed of anterior,…

Q: What muscle type goes with lacks saromers?

A: The type of the muscle tissue that lacks sarcomere.

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.