Directions
: one or more of the given statements or completions is/are correct. Choose the
answer: A
– if only 1,2, and 3 are correct; B – if only 1 and 3 are correct; C – if only 2 and
4 are correct; D
– if only 4 is correct; E – if all are correct.
13. The connective tissue extracellular matrix is composed of:
(1) collagen fibres (2) amorphous ground substance (3) elastic fibres (4) blood vessels
14. The following statements regarding the collagen fibres are true:
(1) are composed of tropocollagen (2) have great tensile strength (3) are eosinophilic (4)
electron micrographs reveal their cross-banding pattern
15. The following statements regarding the elastic fibres are true:
(1) require special staining to be observed by light microscopy (2) are coiled and branching
(3) are able to stretch (4) consist of procollagen
16. The following statements regarding the reticular fibres are true:
(1) mostly consist of type III collagen (2) are stained by silver impregnation (3) are located
in the stroma of hemopoietic organs (4) are secreted by reticular cells
17. The amorphous ground substance of the loose connective tissue matrix
includes:
(1) glycosaminoglycans (2) proteoglycans (3) glycoproteins (4) water
18. The following statements regarding the dense irregular connective tissue are
true:
(1) contains more fibres but less amorphous ground substance (2) its fibres are oriented in
different directions (3) is located in the dermal reticular layer (4) forms organ capsules
19. The following statements regarding the dense regular connective tissue are true:
(1) contains more fibres but less amorphous ground substance (2) its fibres are arranged
in parallel bundles (3) forms tendons and ligaments (4) contains various cells
20. The macrophages are specialized for the following functions:
(1) phagocytosis of bacteria, foreign particles, and cell debris (2) presentation of antigens
to lymphocytes (3) release of interleukin, pyrogen, and other substances (4) manufacture
of collagen fibres
21. The following statements regarding the plasma cells are true:
(1) have basophilic cytoplasm (2) light areas with Golgi apparatus are adjacent to their
nuclei (3) manufacture antibodies (4) release histamine and heparin
22. The connective tissue cells that make up the capillary wall are as follows:
(1) pericytes (2) mast cells (3) endothelial cells (4) reticular cells
23. The following statements regarding the brown adipose tissue are true:
(1) forms the stroma of hemopoietic organs (2) is found in infants as well as in hibernating
animals (3) is the embryonic connective tissue (4) has a rich vascular supply
24. The following statements regarding the pigment cells are true:
(1) are responsible for the synthesis and storage of melanin (2) arise from the neural crest
(3) cluster in the dermis of coloured skin areas (4) are involved in immune reactions
5. CARTILAGE AND BONE
Directions
: each of the following statements contains five suggested completions. Choose
the one that is best in each case.
1. Each of the following statements concerning the hyaline cartilage location is true,
EXCEPT:
A
– covers articular surfaces of bones; B – forms the fetal skeleton; C – constitutes bone
epiphyseal plates; D
– forms the auditory tube; E – is found in the respiratory tract.