Explores the bones of the pectoral and pelvic girdles, which connect the limbs to the axial skeleton.
Eccentric contractions occur when a muscle lengthens while resisting a force, such as lowering a weight.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
The scapula (shoulder blade) and clavicle together form the pectoral girdle, which supports upper limb movement.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
The acetabulum is the cup-like socket in the pelvic girdle that holds the femoral head.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
Calcitonin lowers blood calcium levels and promotes bone formation by stimulating osteoblast activity.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
Slow-twitch muscle fibers are rich in mitochondria and myoglobin, making them ideal for endurance activities.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
Isometric contractions generate tension without a change in muscle length, such as holding a weight steady.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
Ligaments are strong connective tissues that connect bones and stabilize joints.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
The maxilla is part of the facial skeleton and forms the upper jaw.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
The ischium forms the lower, posterior part of the pelvic girdle and supports body weight when sitting.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
The masseter muscle is one of the strongest muscles in the body and plays a key role in chewing.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
The scapula forms the shoulder joint by articulating with the humerus.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Pectoral and Pelvic Girdles
