They tend to enlarge following vigorous exercise, a phenomenon called muscular hypertrophy and are located around the body. Conversely, cardiac muscle is confined only to the heart, its main role being to distribute blood. Its myogenic nature means contractions are under involuntary control and cause prevention from fatigue. The natural beating rhythm is adjusted via sympathetic and parasympathetic neurons of the CNS to suit physiological conditions. The function of these muscles is closely related to their structure and any differences in structure allow these two types of muscle to be identified.
(1 point) The medial Collateral Ligament also known as the MCL is a band that runs in between the inner surfaces of the femur and the tibia. It endures forces acting starting on the outer surface of the knee which is called valgus forces, this stops the knee from collapsing inwards. The MCL has two parts; an inner part that
The vertebral column forms a stable but mobile axis for the rest of the body. It is made up of • Bones • Joints • Discs • Ligaments • Muscles • Tendons • Blood vessels The bones provide strength and are honeycombed for lightness, and ligaments , tendons and muscles provide stability. The muscles are also a source of power and provide movement and support for the spinal column, maintaining the natural curves and controlling excessive bending. Muscles are the first line in defense in protecting other structures of the back. Joints are where two or more bones meet.
Increased Joint Range of Movement Exercise increases the production of synovial fluid which keeps our joints lubricated and makes them supple (bend and move easily and gracefully). Synovial fluid production increases the range of movement available at your joints in the short term. Often, after long periods of immobility (long periods of time not moving), our joints “dry out” stiffen up and lose some of their movement range. Exercise increases the range of movement available at our joints as more lubricating synovial fluid is released into them. Mobility exercises such as arm circles and knee bends keep our joints supple by ensuring a steady supply of synovial fluid.
Lacrosse Shooting- Biomechanics and Anatomy Biomechanics of the body is essential in shooting a lacrosse ball. The shot speed and power of the ball traveling from the lacrosse stick and into the net are referred to as “CRACKING THE WHIP”. This is the ability to create momentum using large heavy body segments and then passing it along to smaller segments. In conserving momentum through the system, you’re creating the maximum speed output. Three key biomechanics lower body mechanics, creating torque and turning it into speed and snapping the stick.
| | |Average person has equal amounts of Type I and Type II. | | |Athletes have either more type I or type II depending on their sport. | | |Type I are more efficient at using oxygen to make ATP | | |Type I have greater fatigue resistance.
There are a few different types of joints in the human body such as ball and socket joints, hinge joints and pivot joints all which allow different types of movement. These joints are held together by muscles which work like levers to allow the bones at a joint to work like hinges. Muscles pull and move the bones at particular joints and this is what makes joints move thus the body moves. When supporting moving and positioning activities it is important to remember that muscles can only move joints as far as the joint allows. For example knees and elbow joints have limited movement and it is important to know how easy it is to these damage joints for example heaving people around a bed without using correct equipment or illegal lifting a person under their arms.
• Define: antagonist, synergist, prime mover o Synergist: a muscle that assists the action of a prime mover o Antagonist: A muscle that act in opposition to a prime mover o Prime Mover: muscle primarily responsible for producing an action • List the various ways that muscles are named. Give a specific example for each way. o Location: An example of this would be the obicularis oris, because oris means mouth. o Shape: The trapezius is named because it is similar to the
Ligaments help provide their stability and muscles contract to produce movement. The most common synovial joints are listed below: * Ball and socket joints, like your hip and shoulder joints, are the most mobile type of joint in the human body. They allow you to swing your arms and legs in many different directions * Ellipsoidal joints, such as the joint at the base of your index finger, allow bending and extending, rocking from side to side, but rotation is limited * Gliding joints occur between the surfaces of two flat bones that are held together by ligaments. Some of the bones in your wrist and ankles move by gliding against each other * Hinge joints, like in your knee and elbow, enable movement similar to the opening and closing of a hinged door * The pivot joint in your neck allows you to turn your head from side to side * The only saddle joints in your body are in your thumbs. The bones in a saddle joint can rock back and forth and from side to side, but they have limited rotation Bones
The process of respiration involves the energy that is released from the food and the cells require good supplies of nutrients and oxygen in order to release a great deal of energy. The heart which is the most crucial organ in the circulatory system is a muscular pump that produces blood pressure to push the blood through the arteries and around the body; however the mammalian heart is a muscular double pump. The reason why it’s called a ‘double pump’ is because the right side pumps deoxygenated blood to the lungs to be oxygenated and the left side pumps oxygenated blood to the rest of the body. In addition to this, the left and right side of