At formation of a muscle tissue in an embryogenesis process of fusion of myoblasts in myosyncithium is quenched. What tissue development will be disturbed?

A skeletal muscle tissue

A muscle tissue derivate of neural tube

A muscle tissue derivate of ectoderm

A smooth muscle tissue derivate of mesenchyme

A cardiac muscle tissue

2

47

At injection to the patient of a proteinaceous drug the amount of plasma cells, which produce specific antibodies on the given antigen, increases. Due to what blood cells there is an augmentation of an amount of plasma cells?

B cells

T-suppressor cells

Т-killers

T-helper cells

В-memory cells

2

48

The leading part in shaping a vascular phase of an inflammation is played with histamine. What cell of loose connective tissue produce histamine?

Mast cell

A fibroblast

A plasma cells

A fibrocyte

A macrophage

2

49

At examination of a striated muscle fiber after a mechanical trauma destruction of thick myofilaments is observed. Where pathological modifications if filaments will be studied in polarized light will be localized?

In A band

In I band

In half of A-band

In A band and in I band

In half of I band

2

50

At examination of a striated muscle fiber after treatment of hydrolyses enzymes destruction of thin myofilaments is observed. What super molecular structures have tested damage?

Actin myofilaments

Myosin myofilaments

Tonofibrils

Tropocollagin complexes

Nucleoprotein complexes

2

51

At a wound repair on the defective field of penetrating layers of a skin occurs granular tissue. What cells are discovered after wound and produce granular tissue?

Myofibroblasts

Fibrocytes

Plasma cells

Macrophages

Adipose cells

2

52

After wound of an extremity the woman had bleeding which is accompanied by time-lagged coagulation of a blood (at a normal amount of platelets in analysis of a blood). What substance of loose connective tissue hinders with process of blood coagulation? What cell is it produced by?

Heparin, mast cells

Histamin, mast cells

Heparin, macrophage

Heparin, plasma cells

Heparin, fibroblast

2

53

During an operative measure at the patient the part of a small intestine is removed. Due to what elements regeneration of a muscular layer is possible?

Smooth muscle cells

Мyosyncithium

Adipose cells

Satellite cells

Fibrocytes

2

54

Patient with injured muscles of the lower extremities was admitted to the traumatological department. Due to what cells is reparative regeneration of the muscle fibers and restoration of the muscle function possible?

Satellite-cells

Myoepithelial cells

Myoblasts

Myofibroblasts

Fibroblasts

2

55

After a wound repair on its place the cicatrix has formed. What substance is the basic ingredient of this type of a connective tissue?

Collagen

Keratan sulfate

Elastin

Hyaluronic acid

Chondroitin sulfate

2

56

At an endochondral bone formation of tubular bones between epiphysis and diaphysis centers of an ossification form a plate, which further ensures body height of bones in length. How this plate is named?

Epiphyseal plate

Bone lamellae

Subperiosteal bone collar

An osteon

Inner circumferential lamellar

2

57

At the patient the tremor and convulsions that is caused by breaking of nerve fibers myelination of a central nervous system is observed. Function of what cells suffers at this disease?

Olygodendrocytes

Fibrillar astrocytes

Ependymal cells

Protoplasmatic astrocytes

Microglial cells

2

58

In what cells during life the mitosis is not observed, and the quantitative content DNA remains to stationary values?

In neurones

In hemopoietic

In striated muscle fiber

In smooth muscle

In an epidermis

2

59

Owing to chondrodystrophia (anomaly of development of a cartilage) has been damaged a fibrocartilage. In what organ is possible to observe pathological modifications?

In intervertebral disks

In a trachea

In a larynx

On articulate surfaces

In an auricle

2

60