SSC CGL Human Body Questions and Answers – Page 6

Vitamin A is incorrect because it refers to a different organ, substance, process, or medical association. Vitamin C is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Vitamin B12 is incorrect because its function, source, target, or disease relationship does not match the question. Decide whether it concerns anatomy, physiology, blood, hormones, vitamins, immunity, pathogens, or disease. Therefore option C, Vitamin K, is factually consistent with the stem, the marked correct index, and the explanation. Vitamin K is essential for the synthesis of clotting factors II VII IX and X. Without it blood cannot clot properly.

human body is In the human body, this option has the required identity, location, function, secretion, deficiency relationship, or disease association. Bone is incorrect because it refers to a different organ, substance, process, or medical association. Cartilage is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Dentine is incorrect because its function, source, target, or disease relationship does not match the question. Do not confuse an organ that produces a substance with an organ on which that substance acts, or a vector with the organism that causes a disease. Therefore option C, Enamel, is factually consistent with the stem, the marked correct index, and the explanation. Tooth enamel is the hardest substance in the human body.

es the enzyme pepsin? Liver is incorrect because it refers to a different organ, substance, process, or medical association. Pancreas is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Small intestine is incorrect because its function, source, target, or disease relationship does not match the question. Do not confuse an organ that produces a substance with an organ on which that substance acts, or a vector with the organism that causes a disease. Therefore option C, Stomach, is factually consistent with the stem, the marked correct index, and the explanation. Pepsin is produced in the stomach by chief cells. It is a protease enzyme that breaks down proteins in acidic conditions.

the movement of food through In the human body, this option has the required identity, location, function, secretion, deficiency relationship, or disease association. Mouth is incorrect because it refers to a different organ, substance, process, or medical association. Lungs is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Blood vessels is incorrect because its function, source, target, or disease relationship does not match the question. Decide whether it concerns anatomy, physiology, blood, hormones, vitamins, immunity, pathogens, or disease. Therefore option B, Digestive tract, is factually consistent with the stem, the marked correct index, and the explanation. Peristalsis is the wave-like muscular contractions that move food through the digestive tract (oesophagus stomach intestines).

n located in the human body? Right side of abdomen is incorrect because it refers to a different organ, substance, process, or medical association. Lower right abdomen is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Behind the stomach is incorrect because its function, source, target, or disease relationship does not match the question. Therefore option B, Upper left abdomen, is factually consistent with the stem, the marked correct index, and the explanation. Spleen is located in the upper left part of the abdomen.

found in the heart? Smooth muscle is incorrect because it refers to a different organ, substance, process, or medical association. Skeletal muscle is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Striated muscle is incorrect because its function, source, target, or disease relationship does not match the question. Therefore option C, Cardiac muscle, is factually consistent with the stem, the marked correct index, and the explanation. Cardiac muscle (myocardium) is found only in the heart. It is involuntary striated muscle that contracts rhythmically throughout life.

the brain is called In the human body, this option has the required identity, location, function, secretion, deficiency relationship, or disease association. Dura mater is incorrect because it refers to a different organ, substance, process, or medical association. Pericardium is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Pleura is incorrect because its function, source, target, or disease relationship does not match the question. Therefore option B, Meninges, is factually consistent with the stem, the marked correct index, and the explanation. The meninges are three protective membranes (dura mater arachnoid and pia mater) that cover and protect the brain and spinal cord.

ny pairs of spinal nerves are present in humans? There are 31 pairs of spinal nerves in humans: 8 cervical 12 thoracic 5 lumbar 5 sacral and 1 coccygeal.

rs of cranial nerves are present in humans? There are 12 pairs of cranial nerves in humans. They are numbered I to XII and emerge directly from the brain.

esponsible for memory and thinking? Cerebellum is incorrect because it refers to a different organ, substance, process, or medical association. Medulla is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Hypothalamus is incorrect because its function, source, target, or disease relationship does not match the question. Then recall the exact source–function or deficiency–disorder pair and eliminate neighbouring concepts. Therefore option C, Cerebrum, is factually consistent with the stem, the marked correct index, and the explanation. Cerebrum is the largest part of the brain responsible for memory thinking reasoning and voluntary movements.