What makes a person’s leg more or less stiff during running or hopping? What sort of internal (anatomical, physiological, and/or physiological) factors will influence leg stiffness?

Q: The skeletal system performs four of the following functions. Which is NOT one of the skeletal…

A: The skeletal system is the body system that consists of bones, cartilages and the joints. It works…

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: How does physiology of physical activity fit within the discipline of kinesiology?

A: Kinesiology refers to the study of body movements of the human or nonhuman body. It involves…

Q: Two athletes show up in the emergency room following a college football game. One has a fracture of…

A: Fibula fractures typically occur as part of an ankle injury. Whenever a fibula fracture is found,…

Q: What is Sit and Reach? What is the purpose of it?

A: Flexibility test It assesses the joints and muscles ability of range of motion.  Types: Shoulder…

Q: What terms describe movements at synovial joints?

A: Synovial joints are characterized by a fluid-filled space, called a synovial cavity, between the…

Q: How many hours should person walking on stairs to loose weight

A: One of the effective methods to progressively and gradually lose weight is performing physical…

Q: You are the gym with a friend who complains that she cannot lift as much weight on a new machine as…

A: Exercise refers to any type of physical activity. During exercise, the two important organs of the…

Q: List four unique characteristics of human physical activity.

A: The bodily movement that requires energy expenditure and is brought about by the skeletal muscles of…

Q: the shoulder and the glutes are on which surface of the body?

A: A group of three muscles: gluteus maximus, gluteus medius and gluteus minimus that originate from…

Q: What functions are served by synovial fluid?

A: We can say that Synovial fluid, also known as synovia, is a viscous, non-Newtonian fluid present in…

Q: How does Muscular dystrophy disease affect a common human being?

A: Answer- Muscular dystrophy is the genetic disease that affects whole muscular system of the body.…

Q: Distinguish between flexion and extension

A: Muscles and joints are important anatomical features of the body. The motion along the joints is…

Q: What is the role of cartilage in the knee joint?

A: CARTILAGE IS A TYPE OF SKELETAL CONNECTIVE TISSUE WHICH IS ELASTIC ,HARDER THAN DENSE CONNECTIVE…

Q: Describe and identify on which segment of the legs/limbs would you expect the ambulatorial,…

A: Insects (from the Latin insectum) are hexapod pancrustaceans belonging to the class Insecta. They…

Q: what does stretching do to prevent injuries?

A: Injured muscles may not be sufficiently able to help the joints, which can prompt joint injury.…

Q: What is the physiological significance of bursae?

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: How is an aponeurosis functionally similar to a tendon?

A: The tissue is the group of cells, that have the same function and structure. Different organs…

Q: What is the role of contraction of the leg skeletal muscles?

A: Contraction in muscle helps to movement and allow to control the different body part

Q: Describe a body position that can exist whenall major body parts are flexed.

A: Flexion is a physical position that decrease the angle between the bones of the limb at a joint.…

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: What is the approximate measurement for the length of the average adult male foot?

A: According to American Academy of Orthopaedic Surgeons(in2014) reported that the worldwide average…

Q: What kinds of joints make up the knee joint?

A: A joint is also called as articulation. It’s a connection between bones which allows movement of…

Q: Compared to upright stance do the following postures exert more or less pressure on intervertebral…

A: A good posture involves least strain placed on supporting muscles and ligaments during activities…

Q: Compare the structure, function, and common body locations of bursae and tendon sheaths.

A: Synovial joint is a diarthrosis, highly innervated, complicated structure found between the bones.…

Q: What methods can you think of that kinesiologists might use to study physical activity?

A: Kinesiology is a type of treatment that utilizations muscle monitoring (biofeedback) to take a look…

Q: Your knees should be bent at a comfortable and greater than 90 degrees flexion when sitting in front…

A: Body mechanics is the coordinated effort of the nervous system and musculoskeletal system to…

Q: Which of the following statements is correct about whathappens during flexion?a. The angle between…

A: The skeletal system is the center of the body. Mainly comprises of joints, cartilage, and bones. The…

Q: What is summation, tetanus, treppe and twitch?

A: The process of shrinkage or shortening or drawing of the muscle fibers in response to the external…

Q: How does exercise influence the number of Glut transporters on the sarcolemma?

A: Glucose transporters are a diverse group of membrane proteins that facilitate glucose transport…

Q: Why is swelling of feet of leg caused when a person stands immobile for a long time?

A: The abnormal accumulation of fluid in the tissue of the body is called edema. Edema usually occurs…

Q: What movement does the hip joint make when starting the stance phase of a normal gait cycle? A.…

A: The "human skeletal system" is made up of bones, cartilage, ligaments, and tendons that link to…

Q: he compartments of the femoral sheath is occupied by?

A: The human body is a buildup of numerous muscles, bones, and ligaments. These components provide…

Q: What can happen to homeostasis when a component of the skeletal system malfunctions?

A: Homeostasis is the ability of the organism to maintain a relatively stable internal state that…

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.