Tag: introduction to locomotion

• Locomotion occurs when a body changes its position from one place to another. 
• Walking, running, climbing are the forms of locomotion. 
• But some movements of our body parts like tongue, jaws does not result in any locomotion. 
• Thus it can be said that all locomotions are movements but all movements are not locomotion. Hence, the correct statement. All locomotion is movement but all movements are not locomotion. 

• The Muscles work by contraction and relaxation this represents that muscles can pull bones, but they can't push them back to the original position.
• For this reason, muscles are often arranged in pairs that pull bones in opposite directions.
• Hence muscles attached to the bones move the body by pull movement only.
• So, the correct answer is 'Pull movement only'.

• Your brain sends messages through your spinal cord and the peripheral nervous system to: control the movement of your arms and legs. control the automatic functions of your body, such as the operations of your heart, your organs and your glands. Hence, All movement of the human body is coordinated and controlled by the Nervous system.

• High extracellular K+  leads to depolarization and ensuing inactivation of voltage-gated Na+ channels and loss of excitability in isolated muscles, exercise-induced loss of K+ is likely to reduce muscle excitability and thereby contribute to muscle fatigue. Hence, Muscular and nervous excitability is lowered by K.

• Locomotion is when the movement of a part of the body leads to change in the position and location of the organism. 
•  In multicellular animals, these movements include walking, running, jumping, crawling, climbing, swimming, flying, galloping, slithering, and so on. Hence, the Movement of the whole animal from one place to another place is called Locomotion. 
So, the correct answer is 'Locomotion'.

•  Upon muscle contraction, the A-bands do not change their length, whereas the I-bands and the H-zone shorten.
•  This causes the Z lines to come closer together. The protein [tropomyosin] covers the myosin binding sites of the actin molecules in the muscle cell. Hence, A-Band remains constant  is true of muscle contraction
 So, the correct answer is 'A-Band remains constant'.

• The movement of an organism from one place to another, often by the action of appendages such as flagella, limbs, or wings. 
• In some animals, such as fish, locomotion results from a wavelike series of muscle contractions. 
• Types of animal locomotion include walking, running, crawling, rolling, flying, climbing, swimming, skipping and jumping.
•  Bacterial locomotion is of three types: Flagellar, Spirochaetal and Gliding movement. Hence, Locomotion is the characteristic feature of Animal and Microorganism.

Setae are the bristle-like structures that serve in annelid locomotion. Tendon is a connective tissue structure that connects a muscle to another muscle, or a muscle to a bone and serves to transmit the force generated by a muscle during movement. Pseudopods are the outgrowth of the membrane and serve in locomotion in protists. A hydrostatic skeleton is found in many soft-bodied animals and is surrounded by muscles to serve in locomotion. A typhlosole is an internal fold of the intestinal wall found in some mollusks, lampreys and some annelids and echinoderms to serve as absorption surface. 

Bipedalism is a form of terrestrial locomotion where an organism moves by means of its two rear limbs or legs. The major advantage of bipedal locomotion is that it releases forelimbs for other purposes.