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Why is it important to breathing to have a closed chest cavity?
There would be a loss in the ability for the lungs to have pressure because air could be forced out of the wound during movement of the lungs.
Why the Ostwald's viscometer is kept vertically during experiment?
if we put viscometer horizontally, movement of liquid in the tube is not properly and time required by liquid which helps in calculation of viscosity of fluid
What are the advantages and disadvantages of each of the four technologies of training equipment in training general populations?
To completely understand fitness and exercise equipment it's important to comprehend the four different technologies of that equipment: 1) Constant Resistance Devices 2) Variable Resistance Devices 3) Static Resistance Devices 4) Accommodating Resistance Devices Constant Resistance Devices: "The term constant resistance means that a weight (resistance) does not increase or decrease during the course of exercise". The amount of resistance encountered by the user remains unchanged from the beginning of the exercise movement to the end. Examples of training or weight lifting with constant resistance devices would be lifting a barbell, dumbbell, or using a cabled weight stack. Weight training in this manner has some inherent disadvantages. First of all, constant resistance weight lifting exercise does not correct for changes in the musculoskeletal leverage that occurs during an exercise movement. Secondly, this method does not account for reduced effort that comes with fatigue. When following a weight lifting routine with constant resistance devices, the user experiences changes in leverage during the joint movement. For example, when doing dumbbell curls the amount of muscular force required is much greater at the bottom of the movement (when the dumbbells are at waist level) than it is at the top of the movement (when the dumbbells are near the chin). As the dumbbells approach the top of the movement, leverage improves and the user doesn't have to work as hard. Therefore, the user doesn't gain as much benefit during the 'easy' portion of the movement. Muscles need stress to gain strength and endurance, so with the relatively diminished stress of constant resistance devices some of the benefit is gone. Some experts argue that constant resistance exercise is more natural than any other weight lifting program because leverage imbalances match the actual day-to-day movement of the body. Variable Resistance Devices: "When you hoist a weight by pulling on a cable that goes over the top of a pulley and is attached to a weight, you're engaged in constant resistance training". Some exercise equipment manufacturers have experimented with pulleys that aren't round or don't have the hole in the exact middle of the pulley, resulting in different levels of resistance felt during different points in the exercise movement. Unlike constant resistance devices, variable resistance fitness equipment does not match the natural way the human body works. Some exercise scientists view this as a disadvantage, as it may cause disturbance in the brain centers that interpret force and movement patterns. The advantage of variable resistance fitness equipment is that it amplifies the level of stress placed on the muscles by forcing them to work equally hard throughout the full range of motion. Critics respond that since everyone is different is size, stature and strength it is virtually impossible to match everybody's leverage with machine leverage. Static Resistance Devices: "Contracting your muscles without movement is called static contraction. The term isometric exercise was coined to describe this form of stress". The public, searching for a new weight loss tip in the 1950's and early 1960's, adopted isometric exercise as their new weight lifting workout. Unfortunately, scientists eventually proved what many weight watchers had already learned: isometrically contracting a muscle results in that muscle only gaining strength in that position. To gain strength throughout the entire range of movement, the user would have to isometrically contract their muscles throughout every conceivable angle in the entire range! Today, very few people consider using static resistance devices as part of their weight loss system for the simple reason that isometric exercise is the least effective of the four training technologies. Accommodating Resistance Devices: "Like variable resistance devices, accommodating resistance machinery is designed to allow you to exert maximum resistance throughout the full range of movement in each of your exercises. In doing so, you are able to maximize the amount of exercise stress your muscles receive". Accommodating resistance exercise equipment somewhat controls the resistance that is encountered, thereby allowing the user to exert maximum force throughout the entire range of motion and throughout the entire exercise. This is the type of gym equipment used at circuit training fitness centers. Again, the primary benefit is that the user can exert maximum force in any position, which allows for a full and complete workout. As an example, consider dumbbell curls. Traditional dumbbell curls result in decreased leverage at the top of the movement. Circuit training exercise equipment, on the other hand, applies even and consistent force throughout the entire range of motion. In other words, circuit training equipment places the muscle under constant tension for more time than alternative training technologies. "Tension (resistance that is stressful enough to cause muscles to adapt), together with sufficient time over which it is applied, go hand-in-hand to produce superior gains". Another advantage of accommodating resistance exercise equipment is that the relatively controlled speed of the movement drastically reduces the opportunity for injury. As ballistic movement is virtually impossible on this type of equipment, injury from overextended joints, pulled muscles and uncontrolled movements is also highly unlikely.
What was John Harvey responsible for discovering during the Scientific Revolution?
for all the ap world history people out there the answer is he discovered the circular movement of blood in animals just search his name. Good luck
Longshore current and longshore drift?
Longshore current is the movement of water nearest the coast. Usually caused by tides. Longshore drift is the movement of beach or coastal material, by longshore drift. The action of waves loosen the material, which is then moved by the current and deposited further down tide. The action is greater during storms.
What are the classification of muscles according to action?
Muscles can be classified into agonist (prime mover) muscles that directly produce a desired movement, antagonist muscles that oppose the action of agonist muscles, and synergist muscles that assist the agonist muscles in performing a movement. Additionally, stabilizer muscles provide support and stability to joints during movement.
Antagonists are muscles that resist the actions of what and cause movement in the opposite direction?
Antagonists are muscles that resist the actions of agonist muscles and cause movement in the opposite direction. They help control the speed and range of motion of a joint during movement. Working together, agonist and antagonist muscles create balanced movement patterns in the body.
What extrinsic eye muscles control the movement of the eyes during convergence reflex?
Medial Rectus
What is the role of fixator muscle in human body?
The main role of fixator muscles in the human body is to stabilize joints and maintain the body's posture during movement. Fixator muscles work synergistically with other muscles to provide stability and support for efficient movement. They help in preventing unwanted movement of joints and assist in maintaining proper alignment during physical activities.
Can you get piles from sitting on a cold floor?
No they are formed when you strain during a bowel movement and weaken your bowel muscles.
What connects your muscles to your bones?
Tendons connect muscles to bones. They are strong bands of tissue that help transfer the force generated by muscles to move and support the bones during movement.
Which organ system are involved in movement?
The musculoskeletal system, which includes bones, muscles, and joints, is primarily responsible for movement in the body. The nervous system plays a crucial role in initiating and coordinating movement through the transmission of signals from the brain to muscles. Additionally, the cardiovascular system helps deliver oxygen and nutrients to muscles during movement to support their function.
How are diaphragm and intercostal muscles stimulated?
The diaphragm is stimulated the same way all other muscles are - nerve impulses that originate in the brain (or sometimes the spinal cord). The intercostal muscles expand during inhalation and contract during exhalation in response to the movement of the lungs by the diaphragm.
What is the meaning of internal in movement of the body?
Internal in movement of the body typically refers to the activation and engagement of muscles, tendons, and ligaments that are located deep within the body, such as the core muscles. These internal structures play a crucial role in providing stability, strength, and support during movement and physical activities. Focusing on strengthening these internal muscles can help improve overall movement efficiency and reduce the risk of injury.
Which muscle compartment is involved in eversion joint movement?
The muscles involved in eversion joint movement are primarily located in the lateral compartment of the lower leg. These include muscles such as the peroneus longus and peroneus brevis. These muscles work together to move the foot outward and help with stability during walking and running.
Why do antagonistic muscles maintain tension?
Antagonistic muscles maintain tension to provide stability and support to joints during movement. This tension allows for precise control over the range and direction of movement, as well as helps to prevent injury by stabilizing the joints.
What happens during isokinetic exercise Muscles contract at a constant rate. Muscles contract and relax to move a joint. Muscles do not contract at all. Muscles contract with very little body movement.?
Muscles contract and relax to move a joint. ... Muscles contract at a constant rate. Muscles contract and relax to move a joint.
