Radha was running on a treadmill at a great speed for 15 minutes continuously.
Question: Radha was running on a treadmill at a great speed for 15 minutes continuously. She stopped the treadmill and abruptly came out. For the next few minutes, she was breathing heavily/fast. Answer the following questions. a. What happened to her muscles when she did strenuously exercise? b. How did her breathing rate change? Solution: a. Her muscles got fatigued as the accumulation of lactic acid in the muscles occurred due to the lack of oxygen during the exercise. b. Breathing rate chang...
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{x}{\sqrt{x^{2}+a^{2}}+\sqrt{x^{2}-a^{2}}} d x$ Solution: Rationlize the given equation we get $\Rightarrow \int \frac{x}{\sqrt{x^{2}+a^{2}}+\sqrt{x^{2}-a^{2}}} \times \frac{\sqrt{x^{2}+a^{2}}-\sqrt{x^{2}-a^{2}}}{\sqrt{x^{2}+a^{2}}-\sqrt{x^{2}-a^{2}}} d x$ $\Rightarrow \int \frac{x\left(\sqrt{x^{2}+a^{2}}-\sqrt{x^{2}-a^{2}}\right)}{2 a^{2}} d x$ Assume $\mathrm{x}^{2}=\mathrm{t}$ $2 x \cdot d x=d t$ $\Rightarrow \mathrm{dx}=\frac{\mathrm{dt}...
Read More →Rahul exercises regularly by visiting a gymnasium.
Question: Rahul exercises regularly by visiting a gymnasium. Of late he is gaining weight. What could be the reason? Choose the correct answer and elaborate. a. Rahul has gained weight due to the accumulation of fats in the body. b. Rahul has gained weight due to increased muscle and less fat. c. Rahul has gained weight because his muscle shape has improved. d. Rahul has gained weight because he is accumulating water in the body. Solution: b. Rahul has gained weight due to increased muscle and l...
Read More →Name at least two hormones
Question: Name at least two hormones which result in fluctuation of Ca+level. Solution: Thyrocalcitonin (TCT) which lowers the calcium and potassium levels in the blood and Parathyroid hormone which increased level of this cause the bones to release their Ca+into the blood....
Read More →Exchange of calcium between bone and extracellular
Question: Exchange of calcium between bone and extracellular fluid takes place under the influence of certain hormones a. What will happen if more of Ca+is in extracellular fluid? b. What will happen if very less amount of Ca+is in the extracellular fluid? Solution: a. If more of Ca+is in the extracellular fluid, then it will get accumulated into the bones under the influence of the hormone Thyrocalcitonin (TCT) b. If very less amount of Ca+is in the extracellular fluid thin bone resorption woul...
Read More →In old age, people often suffer from stiff and inflamed joints.
Question: In old age, people often suffer from stiff and inflamed joints. What is this condition called? What are the possible reasons for these symptoms? Solution: In old age, people often suffer from stiff and inflamed joints due to an autoimmune disease known as rheumatoid arthritis. Reasons are: 1. The inflammation in the synovial joints due to the immune system attacking its synovial cells. 2. Smoking, genetic factors, and vitamin D deficiency can be the reason for the trigger behind the im...
Read More →With respect to the rib cage,
Question: With respect to the rib cage, explain the following: a. Bicephalic ribs b. True ribs c. Floating ribs Solution: a. Bicephalic ribs are called bicephalic because each of the two ribs has articulating surfaces on the dorsal end b. True ribs: The first seven ribs known as true ribs. Ventrally they are connected to the sternum with the help of hyaline cartilage. c. Floating ribs: These ribs are not connected to the sternum, and they are the last two ribs (11th and 12th ribs) of the rib cag...
Read More →Our forearm is made of three different bones.
Question: Our forearm is made of three different bones. Comment. Solution: Our forearms are made up of three different types of bones. Humerus, Radius, and Ulna. The humerus forms the joints at the shoulder and the elbow. Radius or radial bone extends from the other side of the elbow to the side of thumb of the wrist, and it runs parallel to the ulna. Thus ulna stretches from elbow to the young finger....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{e^{m \tan ^{-1} x}}{1+x^{2}} d x$ Solution: Assume $\tan ^{-1} x=t$ $d\left(\tan ^{-1} x\right)=d t$ $\Rightarrow \frac{1}{x^{2}+1}=d t$ Substituting $\mathrm{t}$ and $\mathrm{dt}$ $\Rightarrow \int e^{m t} d t$ $\Rightarrow \frac{e^{m t}}{m}+c$ But $t=\tan ^{-1}_{x}$ $\Rightarrow \frac{\mathrm{e}^{\mathrm{mtan}^{-1} \mathrm{x}}}{\mathrm{m}}+\mathrm{c}$...
Read More →Give the location of a ball and socket
Question: Give the location of a ball and socket joint in a human body Solution: It is found between the humerus and Pectoral girdle (Shoulder Joint). Femur and Acetabulum of Pelvic girdle (Hip Joint). There are four ball and socket joints present in the human body. Two shoulder joints and two hip joints....
Read More →How do our bone joints function
Question: How do our bone joints function without grinding noise and pain? Solution: Due to the presence of synovial fluid, which is filled in the synovial cavity, our bone joints function without pain and noise....
Read More →Which tissue is afflicted by Myasthenia gravis?
Question: Which tissue is afflicted by Myasthenia gravis? What is the underlying cause? Solution: Myasthenia gravis is an autoimmune disease which affects the neuromuscular junction tissue. The underlying cause of Myasthenia gravis (MG) is that the immune system starts to attack its cells and which causes the transmission errors between the nerve impulse and skeletal muscles....
Read More →What is the difference between the matrix
Question: What is the difference between the matrix of bones and cartilage? Solution: Matrix of bones is vascular and has lamellae. It has a protein called ossein whereas the matrix of cartilage is non-vascular and lamellae are absent....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{\sin (\log x)}{x} d x$ Solution: Assume $\log x=t$ $d(\log x)=d t$ $\Rightarrow \frac{1}{x} d x=d t$ Substituting $\mathrm{t}$ and $\mathrm{dt}$ $\Rightarrow \int \sin t d t$ $=-\cos t+c$ But $\mathrm{t}=\log \mathrm{x}$ $\Rightarrow \cos (\log x)+c$...
Read More →The three tiny bones present in the middle ear are called
Question: The three tiny bones present in the middle ear are called ear ossicles. Write them in correct sequence beginning from the eardrum. Solution: The correct sequence of the three bones present in the middle ear is: Malleus Incus Stapes....
Read More →Sarcolemma, sarcoplasm and sarcoplasmic reticulum
Question: Sarcolemma, sarcoplasm and sarcoplasmic reticulum refer to a particular type of cell in our body. Which is this cell and to what parts of that cell do these names refer to? Solution: Sarcolemma, sarcoplasm and sarcoplasmic reticulum names refer to muscle cells or muscle fibres....
Read More →Locomotion requires a perfect coordinated
Question: Locomotion requires a perfect coordinated activity of muscular, _____, _______ systems Solution: Locomotion requires a perfect coordinated activity of muscular, Skeletal, Nervous systems....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{\sin \left(\tan ^{-1} x\right)}{1+x^{2}} d x$ Solution: Assume $\tan ^{-1} x=t$ $d\left(\tan ^{-1} x\right)=d t$ $\Rightarrow \frac{1}{x^{2}+1}=d t$ Substituting $t$ and $d t$ $\Rightarrow \int \sin t d t$ $=-\cos t+c$ But $t=\tan ^{-1} x$ $\Rightarrow-\cos \left(\tan ^{-1} x\right)+c$...
Read More →Name the cells/tissues in the human body
Question: Name the cells/tissues in the human body which a. exhibit ameboid movement b. exhibit ciliary movement Solution: (a) The cells/tissues in the human body which exhibits ameboid movement are the macrophage cells and leucocyte cells (b) The cells/tissues in the human body which exhibits ciliary movement are the tissues present in the fallopian tube, trachea, and bronchioles....
Read More →Match the followings and mark
Question: Match the followings and mark the correct option Options: a. A-ii, B-i, C-iii, D-iv b. A-iv, B-iii, C-i, D-ii c. A-ii, B-i, C-iv, D-iii d. A-iv, B-i, C-ii, D-iv Solution: Option (b) A-iv, B-iii, C-i, D-iiis the answer....
Read More →Muscles with characteristic striations
Question: Muscles with characteristic striations and involuntary are a. Muscles in the wall of alimentary canal b. Muscles of the heart c. Muscles assisting locomotion d. Muscles of the eyelids Solution: Option (b)Muscles of the heartis the answer....
Read More →Which one of the following statements is true?
Question: Which one of the following statements is true? a. Head of humerus bone articulates with the acetabulum of the pectoral girdle. b. Head of humerus bone articulates with the glenoid cavity of the pectoral girdle. c. Head of humerus bone articulates with the acetabulum of the pelvic girdle. d. Head of humerus bone articulates with a glenoid cavity of the pelvic girdle. Solution: Option (b)Head of humerus bone articulates with the glenoid cavity of the pectoral girdle is the answer....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{\cos \sqrt{x}}{\sqrt{x}} d x$ Solution: Assume $\sqrt{x}=t$ $d(\sqrt{x})=d t$ $\Rightarrow \frac{1}{2 \sqrt{x}} \mathrm{dx}=\mathrm{dt}$ $\Rightarrow \frac{1}{\sqrt{x}} \mathrm{dx}=2 \mathrm{dt}$ Substituting $\mathrm{t}$ and $\mathrm{dt}$ $\Rightarrow 2 \int \cos t d t$ $=2 \sin t+c$ But $\sqrt{x}=t$ $\Rightarrow 2 \sin (\sqrt{x})+c$...
Read More →Which one of the following statement
Question: Which one of the following statement is incorrect? a. Heart muscles are striated and involuntary b. The muscles of the hands and legs are striated and voluntary c. The muscles located in the inner walls of the alimentary canal are striated and involuntary d. Muscles located in the reproductive tracts are unstriated and involuntary Solution: Option (c)The muscles located in the inner walls of the alimentary canal are striated and involuntaryis the answer....
Read More →Which one of the following is not a disorder
Question: Which one of the following is not a disorder of bone? a. Arthritis b. Osteoporosis c. Rickets d. Atherosclerosis Solution: Option (d)Atherosclerosisis the answer....
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