Locomotion & Movement – Skeletal System – 2:
1. Which of these bones is not a part of the coxal bone?
A. Ilium
B. Acromion
C. Ischium
D. Pubis
Answer: B
2. Which of these structures are present on the scapula?
A. Tibia
B. Patella
C. Acromion
D. Ischium
Answer: C
3. How many palm bones do humans possess?
A. 14
B. 8
C. 7
D. 5
Answer: D
4. The 10th pair of ribs is known as floating ribs. True or false?
A. True
B. False
Answer: B
5. How many lumbar vertebrae are present in the vertebral column?
A. 7
B. 12
C. 1
D. 5
Answer: D
Explanation: Humans possess 26 vertebrae in the vertebral column. These vertebrae are divided into five different regions, namely the cervical (7), thoracic (12), lumbar (5), sacral (1-fused) and coccygeal (1-fused) regions.
6. Which of these is not a function of the vertebral column?
A. Supports the head
B. Protects the spinal cord
C. Protects the vital organs
D. Point of attachment for ribs
Answer: C
Explanation: The vertebral column has several important functions, which include protection of the spinal cord and providing support to the head. It also serves as a point of attachment for ribs. It does not protect all vital organs.
7. In which region is the sternum present?
A. Cervical
B. Lumbar
C. Thoracic
D. Coccygeal
Answer: C
Explanation: The sternum or the breast bone is present in the thoracic region. It is a flat bone that is present in the midline of the thorax. The sternum is present ventrally in the body and helps in the attachment of ribs.
8. How many true ribs are present in the human body?
A. 7 pairs
B. 8 pairs
C. 9 pairs
D. 10 pairs
Answer: A
Explanation: The human body has 12 pairs of ribs. They articulate with the vertebral column dorsally and with the sternum ventrally with the help of hyaline cartilage. First seven pairs of ribs are called true ribs.
9. With what are the ribs connected to the vertebral column?
A. Elastic cartilage
B. Hyaline cartilage
C. Fibro cartilage
D. Tendons
Answer: B
Explanation: The human body has 12 pairs of ribs. The ribs articulate with the vertebral column dorsally and with the sternum ventrally with the help of hyaline cartilage. Hyaline cartilage is a precursor of bone.
10. Which of these is not a component of the rib cage?
A. Vertebral column
B. Ribs
C. Spinal cord
D. Sternum
Answer: C
Explanation: The rib cage is formed out of skeletal structures, namely, the vertebral column, the ribs and the sternum. The spinal cord which runs through the vertebral column and is not a part of the rib cage.
11. What is the number of bones in each limb?
A. 30
B. 36
C. 26
D. 22
Answer: A
Locomotion & Movement – Joints
12. Which of these is not a function of joints?
A. Articulations
B. Allows bone growth
C. Enables mobility
D. Supports body
Answer: D
Explanation: Joints are found between bones. Their functions include articulations of bones to each, permitting bones to grow, and enabling movement and locomotion. Joints do not support the body like bones do.
13. Which of these are the point of contact between bones and cartilage?
A. Tendons
B. Ligaments
C. Joints
D. Fascia
Answer: C
Explanation: Joints are found between bones and between bones and cartilages. Hence, they are the points of contact bones and cartilage. Ligaments attach bone to bone while tendons attach bone to muscle.
14. What do joints act as during movement?
A. Effort
B. Lever
C. Fulcrum
D. Load
Answer: C
Explanation: Movement is generated initially by muscles. Muscles receive an impulse from the nervous system and contract. This force generated carries out movement through joints, which act as fulcrums.
15. Which of these is not a classification of joints?
A. Connective
B. Fibrous
C. Cartilaginous
D. Synovial
Answer: A
Explanation: The points of connection of bones to each other and to cartilages are called joints. They are of three types, namely fibrous joints, cartilaginous joints and synovial joints. Connective is a classification of tissue.
16. Which of these joints do not show any movement?
A. Fibrous
B. Synovial
C. Pivot
D. Cartilaginous
Answer: B
Explanation: Joints are classified into three types, namely fibrous joints, cartilaginous joints and synovial joints. Fibrous joints do not show any movement due to the presence of dense fibrous connective tissues.
17. Which of these show no movement?
A. Joint between atlas and axis
B. Knee joint
C. Skull bones
D. Joints between carpals
Answer: C
Explanation: The joints of the skull bones show no movement. They are fibrous joints. The knee joint is a hinge joint. The joint between atlas and axis is a pivot joint and the joints between the carpals are gliding joints.
18. Which of these join the skull bones to each other to form the cranium?
A. Dense fibrous connective tissues
B. Loose fibrous connective tissues
C. Specialized connective tissue
D. Dense irregular connective tissue
Answer: A
Explanation: The joints of the skull bones are fibrous joint. They show no movement. The skull bones are fused end-to-end with each other with the help of dense fibrous connective tissues to form the cranium.
19. What is the immovable junction between two bones known as?
A. Socket
B. Saddle
C. Hinge
D. Suture
Answer: D
Explanation: The immovable junction between two bones is known as a suture and occurs due to the presence of fibrous joints. Fibrous joints do not allow any movement of the bones, such as in the skull bones.
20. What type of joint is present between adjacent vertebrae?
A. Pivot joint
B. Fibrous joint
C. Cartilaginous joint
D. Gliding joint
Answer: C
Explanation: Cartilaginous joint is present between adjacent vertebrae. These joints are characterized by the presence of cartilage. Cartilaginous joints permit limited movement of the body part.
21. In synovial joints, bones are joined together with the help of cartilages. True or false?
A. True
B. False
Answer: B
Explanation: Joints are of three types, which are namely fibrous joints, cartilaginous joints and synovial joints. Bones are joined to each other with the help of cartilages at cartilaginous joints.
22. Which of these joints permit limited movement?
A. Hinge joints
B. Ball and socket joints
C. Fibrous joints
D. Cartilaginous joints
Answer: D
Explanation: Cartilaginous joints permit limited movement, such as the cartilaginous joints present between adjacent vertebrae of the vertebral column. Fibrous joints do not allow any movement, such as in the skull bones.
23. Which of these is an example of hinge joint?
A. Between the carpals
B. Between carpal and metacarpal of thumb
C. Knee joint
D. Between atlas and axis
Answer: C
Explanation: An example of hinge joint is the knee joint. It is a type of synovial joint. Hinge joints are also present at the ankles, interphalangeal joints and elbows. It allows movement along only one axis.
24. Which of these is an example of saddle joint?
A. Between the carpals
B. Knee joint
C. Between carpal and metacarpal of thumb
D. Between atlas and axis
Answer: C
Explanation: Saddle joint is present between the carpal and metacarpal of thumb. It is a classification of synovial joint. Among the two bones involved in the formation of such a joint, one is shaped like the saddle of a horse.
25. Which of these is an example of pivot joint?
A. Between atlas and axis
B. Between carpal and metacarpal of thumb
C. Knee joint
D. Between the carpals
Answer: A
Explanation: Pivot joint is a classification of synovial joint. It is present between the atlas and axis, which are the first vertebra and the second vertebra, respectively, of the vertebral column. It is also called rotary joint.
26. Which of these is an example of gliding joint?
A. Knee joint
B. Between the carpals
C. Between carpal and metacarpal of thumb
D. Between atlas and axis
Answer: B
