31. Langerhans cells are present in which of the following?
[A] Stratum Spinosum
[B] Stratum Basale
[C] Stratum Granulosum
[D] Stratum Corneum
Show Answer
Correct Answer: A [Stratum Spinosum]
Notes:
Langerhans cells are present in the Stratum Spinosum. Stratum Spinosum has 8-10 layers of many-sided keratinocytes which are closely packed.
32. What are the functions of connective tissue?
1. Insulating
2. Helps in binding the organs together and provides support
3. Helps in the constriction of organs and blood vessels
4. Provides shape to the body, conserves body heat, and also stores energy
Select the codes above:
[A] Only 1 and 2
[B] Only 2 and 3
[C] Only 1, 2 and 4
[D] 1, 2, 3 and 4
Show Answer
Correct Answer: C [Only 1, 2 and 4]
Notes:
The important and major functions of connective tissue in the body are: to insulate, Helps to connect and support the organs, protects against the invasion of pathogens by their phagocytic activity, Provides shape to the body, conserves body heat, and also stores energy, It is involved in the transport of water, nutrients, minerals, hormones, gases, wastes, and other substances within the body.
33. The supportive skeletal structures in the human external ears and in the nose tip are examples of __.
[A] Ligament
[B] Bone
[C] Areolar tissue
[D] Cartilage
Show Answer
Correct Answer: D [Cartilage]
Notes:
The supportive skeletal structures in the human external ears and in the nose tip are examples of cartilage. cartilage belong to connective tissue.
34. Bi-focal lenses are required to correct __
[A] astigmatism
[B] coma
[C] myopia
[D] presbyopia
Show Answer
Correct Answer: D [presbyopia]
Notes:
Bifocals are glasses that have both a correction for your distance vision on the top of the lens and a correction to help you read at the bottom.
35. How many chambers are there in the human heart?
[A] Two
[B] Three
[C] Four
[D] None of these
Show Answer
Correct Answer: C [Four]
Notes:
The human heart is divided into four chambers: two upper chambers called atria, and two lower chambers called ventricles.
36. What is the function of the vena cava in the excretory system?
[A] form a network between the arteries to veins
[B] return deoxygenated blood from the body and the head to the heart
[C] Both 1 and 2
[D] None of these
Show Answer
Correct Answer: B [return deoxygenated blood from the body and the head to the heart]
Notes:
The vena cava returns deoxygenated blood from the body and head to the heart.
37. A series of wave-like muscle contractions that move food through the digestive tract called __
[A] Abduction movement
[B] Peristaltic movement
[C] Adduction movement
[D] Protraction movement
Show Answer
Correct Answer: B [Peristaltic movement]
Notes:
A series of wave-like muscle contractions that move food through the digestive tract is called Peristaltic movement.
38. Syphilis is a bacterial infection usually spread by __
[A] Sexual contact
[B] Wound infection
[C] Air-borne droplets
[D] None of these
Show Answer
Correct Answer: A [Sexual contact]
Notes:
Syphilis is a bacterial infection mostly spread by sexual contact. It is caused by Treponema pallidum bacteria.
39. In which of the following parts of the human digestive system is the digestion of food completed?
[A] Small intestine
[B] Large intestine
[C] Mouth
[D] Stomach
Show Answer
Correct Answer: A [Small intestine]
Notes:
Small intestine has three parts – duodenum, jejunum, and ileum. The maximum digestion of food takes place in the duodenum. While the digestion of food is completed in jejunum. The maximum absorption of food takes place in ileum.
40. In which part of the body is blood produced?
[A] Bone Marrow
[B] Lungs
[C] Brain
[D] Heart
Show Answer
Correct Answer: A [Bone Marrow]
Notes:
Bone marrow is the spongy tissue inside bones that produces blood cells. Bone marrow produces red blood cells, platelets, and white blood cells. The process by which blood cells are made is called haemopoiesis.
