15. Thick skin A. has three different epidermal strata. B, has fewer layers of c
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15. Thick skin A. has three different epidermal strata. B, has fewer layers of cells in the stratum comeum than thin skin. C. is found covering most of the body D. is found in areas subject to pressure or friction such as palms. E. is determined by the thickness of the dermis. 16. In a syndesmosis A. there is an osseous union between the bones of the joint. B. the bones are held together by ligaments called interosseous membranes. C. it is not unusual to find discs of cartilage. D. no movement occurs. E. there is a great range of motion. 17. The cytoskeleton consists of A. lipochromes, microfilaments, and microtubules. B. actin filaments, mitochondria, and intermediate filaments. C. microfilaments, mitochondria, and lipochromes. D. microtubules, actin filaments, and intermediate filaments E. ribosomes, the nucleus, and the Golgi apparatus. 18. Which of the following statements concerning sutures is false? A. They may become completely immovable in adults. B. The opposing bones in the joint interdigitate for stability. C. The tissue between the bones is hyaline cartilage. D. The periosteum of adjacent bones is continuous over the joint. E. Membranes, called fontanels, are present in some sutures at birth. 19. Which of the following is the correct sequence from largest to smallest? A. amino acid, cell, protein, atom B. amino acid, atom, cell, protein C. cell, protein, amino acid, atom D. atom, amino acid, protein, cell E. protein, cell, amino acid, atomExplanation / Answer
15. D. is found in areas subject to pressure or friction such as palms.
Skin is the largest organ forming outer covering of the body. It has two main layers: outer epidermis and inner dermis.
It has been divided into two subcategories: Thick and Thin skin. Thick skin (non-hairy) is found only at the places prone to frictions and aberrations. It has thinner dermis than thin skin. Thick skin has five different epidermal strata (which is 4 in thin skin); stratum basale, stratum spinosum, stratum granulosum, stratum lucidum and stratum corneum (from inner to outer). Stratum Corneum has more layers of keratinized dead cells in thick skin as compared to thin skin.
16. B. the bones are held together by ligaments called interosseous membrane.
Syndesmosis is slightly movable joint (mobility depending upon the length of bones) held together by ligaments. There may present discs of cartilage which provides the motility. Large spaces are found between the bones. example- between tibia and fibula in ankle.
17. D. Microtubules, Actin filaments and intermediate filaments.
The cytoskeleton is the network of filaments and tubules (proteins) present in the cytoplasm between nucleus and plasma membrane. It provides shape and mechanical strength to the cell. It has diverse function in protein organisation, organelle formation ( cilia, flagella, centrosome), spindle organisations and motility.
18. C. the tissue between the bones is Hyaline cartilage.
Cranial sutures are present between bones in the cranium. It is fibrous connective tissue in nature with little or no motility.
19. C. cell, protein, amino acid , atom.
Cell is the basic constituent of every living organisms ,consisting of a fluid filled space with various organelles ,surrounded by plasma membrane. Protein is a macro biomolecule which is a significant part of membrane system. Amino acid is the monomeric unit of proteins. Atom is the smallest particle which is basic constituent of elements forming those molecules.
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