Answer:
1. Answer : (b) palm
Explanation: In humans, the five metacarpals are flat at the back of the hand and bowed on the palmar side; they form a longitudinal arch that accommodates the muscles, tendons, and nerves of the palm. The metacarpals also form a transverse arch that allows the fingertips and thumb to be brought together for manipulation.
2. Answer : (c) Decrease in estrogen
Explanation: Osteoporosis is a bone disease that occurs when the body loses too much bone, makes too little bone, or both. As a result, bones become weak and may break from a fall or, in serious cases, from sneezing or minor bumps. Osteoporosis means “porous bone.” Viewed under a microscope, healthy bone looks like a honeycomb.
3.Answer : (c) Liver
Explanation: In the Cori cycle, glucose is metabolized to pyruvate and then to lactate in muscle, the lactate is released into the blood and carried to the liver, where it is reconverted to pyruvate and used for gluconeogenesis, and the resulting glucose is released and travels back to the muscle.
4. Answer : (b) Acetabulum
Explanation: Each coxal bone is formed by the fusion of three bones - ilium, ischium, and pubis. At the point of fusion of these bones, there is a cavity called the acetabulum to which the thigh bone articulates.
5. Answer : (d) Glenoid cavity
Explanation: The pectoral girdle consists of the two bones that make up your shoulder: clavicle, or collarbone. scapula, or shoulder blade.
6. Answer : (a) Flexor
Explanation: Flexion, or bending, occurs when the angle between the bones decreases. Moving the forearm upward at the elbow or moving the wrist to move the hand toward the forearm are examples of flexion.
7. Answer : (b) Ca
Explanation: The muscle contraction cycle is triggered by calcium ions binding to the protein complex troponin, exposing the active-binding sites on the actin.
8. Answer : (b) Sesamoid bone
Explanation: The bone formed by the ossification of the tendon is called sesamoid bones. Their functions of sesamoid bones modify pressure, to diminish friction.
9. Answer : (d) Hinge joint
Explanation: The elbow is a more complex hinge joint that forms between the upper arm humerus and the forearm ulna and radius.
10. Answer : (a) scapula and canines
Explanation: These body parts include bones and teeth mainly. Thus, based on the above information we can conclude that two of the body parts which do not appear in MRI are the scapula and canines.
11. Answer : (a) ribs
Explanation: The Intercostal Muscles are found between the ribs, and there are two kinds: the internal and external intercostals. The internal intercostal muscles (in the inside of the rib case) extend from the front of the ribs, and go around back, past the bend in the ribs.
12. Answer : (a) Myosin
Explanation: The contractile proteins are myosin, the principal component of thick myofilaments, and actin, which is the principal component of thin myofilaments.
13. Answer : (a) Deltoid ridge
Explanation: Humerus differs from the femur in having a Deltoid ridge.
14. Answer : (a) pivot joint
Explanation: The joint where our neck joins the head is a pivotal joint. It allows us to bend our head forward and backward and turn the head to our right or left. In a pivotal joint, a cylindrical bone rotates in a ring.
15. Answer : (a) Mandible
Explanation: The only bone in your skull that forms freely movable joints is your mandible or jawbone.
16. Answer : (c) frontoparietal
Explanation: Fronto-parietals are a pair of long, broad, flattened, and membranous bones. They are united along the mid-dorsal line and form the whole roof of the cranium. In larval frogs, each fronto-parietal occurs into separate frontal and parietal parts, but in the adult frogs, they become fused to form a single frontoparietal.
17. Answer : (c) Bone will become unfix
Explanation: If the ligaments are cut or broken the bone will become unfixed because ligaments connect bone to bone.
18. Answer : (b) 30
Explanation: The Hind-limb of humans consists of a total of 30 bones.
19. Answer : (c) Fascia
Explanation: Each organized skeletal muscle in the human body is made of a number of muscle bundles or fascicles held together by a common collagenous connective tissue layer called fascia.
20. Answer : (d) Acetylcholine
Explanation: ACh also serves as a neurotransmitter in the periphery in the autonomic nervous system and in the central nervous system.
21. Answer :(d) Tetany
Explanation: Hypocalcemia, also known as a calcium deficiency disease, occurs when the blood has low levels of calcium. A long-term calcium deficiency can lead to dental changes, cataracts, alterations in the brain, and osteoporosis, which causes the bones to become brittle.
22. Answer : (c) motor unit
Explanation: The combination of an individual motor neuron and all of the muscle fibers that it innervates is called a motor unit.
23. Answer : (c) Magnesium ion and ATP
Explanation: G-actin is only functional when it contains either ADP or ATP in its cleft but the form that is bound to ATP predominates in cells when actin is present in its free state.
24. Answer : (b) Synovial membrane
Explanation: The synovial membrane secretes a watery fluid that lubricates and cushions the joint.
25. Answer : (b) trunk
Explanation: A meromyosin molecule doesn't contain a Trunk.
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