Which structure in the skeletal system connects bone to bone?
Ligaments are strong connective tissues that connect bones to other bones.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Skeletal System - Axial Skeleton - Ribs Sternum
Covers the structure and function of the ribs and sternum as part of the axial skeleton.
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Which type of muscle is found in the walls of blood vessels?
Smooth muscle, which is involuntary, lines the walls of blood vessels and regulates blood flow.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
What is the primary function of red bone marrow?
Red bone marrow is responsible for hematopoiesis, the process of forming red and white blood cells.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which of the following statements about synovial joints is correct?
Synovial joints have a fluid-filled synovial cavity that allows movement.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which mineral is essential for bone formation?
Calcium is the primary mineral involved in bone formation and maintenance.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
What is the name of the neurotransmitter responsible for muscle contraction?
Acetylcholine is the neurotransmitter that triggers muscle contraction by generating an action potential.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which type of muscle is found in the walls of the digestive tract?
Smooth muscle, which is involuntary, facilitates peristalsis in the digestive tract.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which of the following is a distinguishing feature of cardiac muscle?
Cardiac muscles have branched fibers, which allow for coordinated contractions necessary for pumping blood.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which of the following bones is a part of the appendicular skeleton?
The femur is a part of the appendicular skeleton, while the sternum, ribs, and vertebrae are part of the axial skeleton.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which of the following is incorrect about the rib cage?
The last two pairs of ribs are called floating ribs, not false ribs.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which of the following is an example of a saddle joint?
The carpometacarpal joint of the thumb is an example of a saddle joint.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Which movement occurs when a limb moves toward the midline of the body?
Adduction is the movement of a limb toward the midline of the body, such as bringing the arms to the side.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum