Question

In: Anatomy and Physiology

true of false.                                        &

true of false.                                                                              the distal end of the humerus is located near the shoulder.                                                                                   the thoracic cavity surrounds and protects the heart and the lungs.                                                                            the 13 pairs of ribs are called costal.                                     the phalanges are the bones in fingers.                               the sternum is also known as the collar bone.                   a callus forms as a bulging deposit around the area in a bone.this tissue eventually becomes cartilage.              impetigo is a highly contagious viral skin infection.           albinism is a deficiency or absence of pigment in the skin, hair, and eyes.                                                .                 malignant melanoma is a skin cancer derived squamous cells of the Epithelium.

Solutions

Expert Solution

1) False. Distal end of the humerus is located away from the. shoulder joint, near the elbow joint. Distal end is formed by two joint processes capitulum and trochlea.

2) True . Thoracic cavity is a type of coelomic cavity which protects heart and lungs.

3) False. 12 pairs of ribs are present first 7 are true ribs, 8th,9th,10th are false ribs and 11th , 12th are floating ribs.

4)True Phalanges are the bones which are present in the fingers and toes are hands and feet.

5)False Sternum is known as breast bone, it is the flat bone which is located at the Centre of the chest. Ribs are attached with sternum with the help of costal cartilage .

6)True . Callus is a type of remodeling occur at the time of fracture mainly, it is made up of cartilage. With time callus is being reabsorbed by osteoclast cells and replace by bone.

7)False. Impetigo is a highly contagious bacterial disease which is caused by staphylococcus aureus.

8)True . Albinism is a deficiency disease caused due to absence of melanin deposition. It effects eyes, hairs and skin. It is a genetic disorder .

9)False . Malignant melanoma is a skin cancer developed due to pigment containing cells Melanocyte .


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