11.2 Muscle & movement

Question 1

State the role of ligaments in human movement

Answer 1

Connect bone to bone

Question 2

State the role of nerves muscles and tendons in human movement

Answer 2

Nerves coordinate and stimulate muscle contraction. Muscles apply effort and force. Tendons connect muscle to bone.

Question 3

Atlanta functions of the structures of the human elbow including radius humorous synovial capsule synovial fluid cartilage ulna

Answer 3

Radius: axes lever for bicep muscles
Ulna: acts of lever for tricep muscles
Radius: axes lever that allows Anchorage of muscles of the elbow
Joint capsule: surrounds joint, and closest synovial cavity, unites connecting bones
Synovial capsule: in case joint cavity,keeps food from escaping
Synovial fluid: provides lubrication and nutrients for joints
Cartilage: prevent bone from rotating together
Bicep: contracts to bring flexion bending of arm
Tricep: contracts to bring extension straightening of arm

Question 4

State the role of bones in human movement

Answer 4

Act as levers and structural support

Question 5

Compare [similarly and differences] the movements of the hip joint and the knee joint

Answer 5

Type of joint hip is ball and socket, knee is hinge. Range of movement fifth is 360 knee is plane. Bones involved: pelvis and femur, femur and tibia.

Similar:both able to move by flexion extension, both freely movable, humor is involving both