Locomotive and Movements handwritten notes pdf in English

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Locomotive and Movements handwritten notes pdf in English:- Today we are sharing Locomotive and Movements handwritten notes pdf in English. This Locomotive and Movements handwritten notes pdf in English download for upcoming examination like NEET, JEE, NTPC, SSC CGL, LIC, REET, UPPSC, MPTET, DSSSB, RPSC, UPSC, DRDO, DDA, AAI, SSC GD, ALL STATE PCS EXAM. This Locomotive and Movements handwritten notes pdf in English download and important questions Locomotive and Movements handwritten notes pdf in English which Will be helpful for you in preparing for the exams. Keep watching the updates on this website every day, here the notes and questions are updated daily, if you need notes/questions on any subject or topic, then you can contact our team. pdfdownload.in The team is looking forward to supporting you.

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Most Important Locomotive and Movements Question

Question 1. What is a tendon?

Answer: The dense connective tissue joins bone and skeletal muscle.

Question 2. What are antagonistic muscles?

Answer: The. pair of muscles which at a joint produce opposite movements.

Question 3. What is tetanus?

Answer: The continued state of muscular contraction is called tetanus.

Question 4. What is threshold stimulus?

Answer: The stimulus of minimum strength which is required to bring about muscular contraction is called the threshold stimulus.

Question 5. What is a muscle twitch?

Answer: The single contraction of muscle upon receiving the stimulus is called muscle twitch. (Contraction is followed by relaxation).

Question 6. What is sarcomere?

Answer: The functional unit of myofibril contracts and causes the shortening of muscle fibre.

Question 7. How many bones are present in the human skeleton?

Answer: The human skeleton contains 206 bones.

Question 8. What are synovial joints?

Answer: These are freely movable joints due to the presence of synovial fluid in the synovial cavity.

Question 9. What is locomotion?

Answer: The bodily movement in animals from one place to the other is called locomotion.

Question 10. What is rigour mortis?

Answer: Stiffening of muscle after death.

Question 11. Name the proteins which help in muscle contraction.

Answer: Myosin and actin.

Question 12. What is the function of synovial fluid?

Answer: Synovial fluid acts as a lubricant.

Question 13. What is a pivot joint?

Answer: The joint allows the turning or rotational movements, e.g., between atlas and axis vertebra.

Question 14. Which of the movable joint makes the hip joint?

Answer: Ball and socket joint.

Question 15. Which muscle contracts to make your palm face upwards?

Answer: Supinator.

Question 16. How many bones are there in the human skull?

Answer: 29

Question 17. Which type of movable joint is the knee joint?

Answer: Hinge joint.

Question 18. Name the band of the skeletal joint which permits movements in a single plane only.

Answer: Hinge joint.

Question 19. Differentiate between A-band and I-band.

Answer: A-band is a dark band having myosin filaments.
I-band is a light band having thin filaments.

Question 20. What is the total number of bones in our body?

Answer: 206.

Question 21. Name the five different categories of vertebrae in your backbone.

Answer: Cervical,
thoracic,
lumber,
sacral and
coccygeal.

Question 20. Where inside the bones are blood cells produced?

Answer: The bone marrow of long bones.

Question 23. Give one example of a ball and socket joint.

Answer: Shoulder joint.

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Locomotion and Movement Important Extra Questions Short Answer 

Question 1. List the mechanical function of the skeleton.

Answer:

It provides a rigid framework of the body and definite shape to organs.
It supports the weight of the body.
It protects the internal organs.
Its long bones function as a lever.
Skeletal muscles with flexible connective tissue bands called tendons in association with endoskeleton and joints give locomotion and movements to different body parts.

Question 2. List some biological function of the skeleton.

Answer: Provides attachment surface to muscles.
Serves as storage depot of calcium and phosphate minerals.
Act in erythropoiesis.
Ear ossicles help in sound wave propagation.
Redbone marrow present inside the marrow cavity of long bones such as femur, humerus and in interstices of spongy bones of vertebrae, sternum, scapula etc. help in the formation of RBCs, WBCs and platelets of the blood. This process is known as Haemopoiesis.

Question 3. List different modes of locomotion and movement in hydra.

Answer:

Contraction and expansion
Bending and swaying
Looping
Somersaulting.
Floating
Gliding
Swimming
Walking.

Question 4. What are the different molecules present in muscles?

Answer:

Contractile proteins viz. actin, myosin and tropomyosin.
Enzymes and other proteins like troponin.
Carbohydrate as a substrate for energy.
Energy carries viz. ATP, ADP, AMP and CP.
Ions viz. Na+, K+, Mg++, Ca+, CI+.

Question 5. How do the joints help in the movement? Explain.

Answer: A synovial or movable joint is a joint which allows the movement of collating bones such that they can move extensively upon each other. In joints, there is a space called a synovial cavity. This cavity remains filled in a fluid called synovial fluid.

The movement of an organ occurs due to the pulling of bones. Movement takes place along the joints which act as the fulcrum of the liver. In fact, the joints function as a lever. Due to the presence of a number of joints movement of the different body parts and the whole body is possible.

Question 6. How calcium affects the process of muscle contraction?

Answer: Muscle fibres are excitable. Normally, a nerve impulse arriving at the neuromuscular junction initiates a contractile response. A neurotransmitter released at the neuromuscular junction enters into the sarcomere through its membrane channel. The opening of the channel also results in the inflow of Na+ inside the sarcomere and generates an action potential in the muscle fibre.

The sarcoplasmic reticulum releases the stored Ca++, which binds with the specific sites present on the troponin component of the thin filament. As a result, the active sites present on the F-actin molecules are exposed. These sites are specific to the myosin head, which exhibits Mg++ dependent ATP as activity.

During relaxation of the muscle, the Ca++ is pumped back into the sarcoplasmic reticulum. As a result, the troponin component becomes free. The cross-bridge breaks and the thin filament occupies its normal position. The muscle relaxes.

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