A patient suffers from epithelial tumor of the right extrapulmonary bronchus. What morphologic type of epithelium gave rise to tumor?

Simple columnar pseudostratified

Simple squamous

Simple cuboidal

Transitional

Stratified squamous nonkeratinized

2

90

What is the function of the T tubule system in skeletal muscle?

Regulates Ca2+ release from sarcoplasmic reticulum

Stores Ca2+

Provides channel for Ca2+ movement with muscle

Wraps individual muscle fibers to form a fascicle

Site of attachment of actin filaments

2

91

Compression of umbilical cord took place. However, blood circulation between fetus and maternal organism happened normally. What morphologic components of the umbilical cord promoted to this?

Mucous tissue

Allantois residue

Tunic of umbilical arteries

Tunic of umbilical vein

Yolk sac residue

2

92

The primary function of brown adipose tissue is:

To produce heat

To store unilocular energy

To produce hormones

To mobilize lipid for export as fatty acids

To initiate the shivering-induced mobilization of lipids

2

93

The extra cellular matrix and the cytoskeleton communicate across the cell membrane through:

Integrins

Proteoglycans

Microtubules

Hyaluronic acid

Microfilaments

2

93

Microvilli are essential components of epithelial cells of the small intestine. Which of the following functions would be defective resulting from a lack of microvilli on epithelia?

Absorption

Stretching

Movement

Protection

Secretion

2

94

The layer of cells that lines the outer surface of the lungs can be irritated by inhaled asbestos particles. These cells can become cancerous and lethal. Which of the following is the cell layer being described?

Simple squamous mesothelium

Simple squamous endothelium

Transitional epithelium

Simple cuboidal epithelium

Simple columnar epithelium

2

94

After birth, growth in the length of long bones occurs primarily through:

Interstitial growth of cartilage cells in the epiphysial plate

Increased bone deposition under the periosteum

The action of osteoblasts in the primary ossification center

The action of osteoblasts in the secondary ossification center

Appositional grows from the periphery

2

95

Which of the following is a characteristic typical of simple layers of epithelia?

All the cells rest on a basal lamina

All the cells cover surface of the skin

All the cells function to prevent abrasion

All the cells are joined by synapses

All the cells have flagella

2

95

The microscopic examination of wound lavage of a patient with acute wound process of his shin revealed big contents of irregular extended-formed cells, with tough nucleus, the basophilic cytoplasm of which includes many Lysosomes, phagosomes and pinocytotic bubbles. What cells are found out in the wound?

Connective tissue macrophages

Fibroblasts

Plasma cells

Mast cells

 

Fibrocytes

2

96

Macrophages would be the most abundant in which of the following tissues?

Loose connective tissue

Dense regular connective tissue

Brown adipose tissue

Dense irregular connective tissue

Embryonic tissue

2

96

Blood sampling for bulk analysis is recommended to be performed on an empty stomach and in the morning. What changes in blood count can occur if to perform blood sampling after food intake?

Increased contents of leukocytes

Reduced contents of erythrocytes

Increased contents of erythrocytes

Reduced contents of thrombocytes

Increased plasma proteins

2

97

After the radioactive exposure, a patient has haematopoietic stem cells disorder. The regeneration of what cells of loose connective tissue will be damaged?

Macrophages

Fibroblasts

Adipose cells

Pericytes

Pigment cells

2

97