HISTOLOGY NBME EXAMINATION TEST 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ The conducting zone of the respiratory system:
A) Includes the upper airways, trachea and the bronchial tree (including
the terminal bronchioles)
B) Is designed for airflow and respiration
C) Includes only the nose and the pharynx
D) Is designed for olfactory
E) A and C are correct
F) B and D are correct. Answer: A) Includes the upper airways, trachea
and the bronchial tree (including the terminal bronchioles)
◉ ***The bronchial tree starts with the primary bronchi:
A)And ends with the respiratory bronchioles
B) And on each section is lined with the simple columnar epithelium
C) And is composed of submucosa with plates of fibrocartilage
D) And is part of the conducting portion
E) A and C are correct
F) B and D are correct. Answer: D) And is part of the conducting portion
,◉ ***The feature of skeletal muscles is:
A) Composed of mononucleated cells
B) Have myofibrils that does not possess A bands
C) Are composed of bundles of multinucleated fibers
D) Their contraction is slow and not subject to voluntary control
E) A and C are correct
F) B and D are correct. Answer: C) Are composed of bundles of
multinucleated fibers
◉ ***In the skeletal muscle thin filaments are composed of:
A) Actin
B) Myosin
C) Tropomyosin
D) Light and heavy chains
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
◉ ***The contraction of skeletal muscle requires:
A) GTP
B) ATP
C) Mg ions
D) Ca ions
,E) A and C are correct
F) B and D are correct. Answer: F) B and D are correct
◉ ***Sarcomere:
A) Is the basic contractile unit of skeletal muscle
B) Is the basic contractile unit of smooth muscle
C) Consist of thick and thin filaments
D) Extends from A band to M line
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
◉ ***What cell type secretes ACTH?
A) Lactotropic cells
B) Thyrotropic cells
C) Somatotropic cells
D) Corticotropic cells
E) A and C are correct
F) B and D are correct. Answer: D) Corticotropic cells
◉ ***Which of the following phrases concerning osteocytes are correct:
A) Oval active cells
B) Placed in Howship's lacunae
, C) Secrete osteoid
D) Almond-shaped cells
E) A and C are correct
F) B and D are correct. Answer: D) Almond-shaped cells
◉ ***Periosteum consists of:
A) Outer layer of collagen fibers and fibroblasts
B) Outer layer of osteoprogenitor cells
C) Inner layer of osteoprogenitor cells
D) Inner layer of collagen fibers and fibroblasts
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
◉ ***Which of the following phrases concerning intramembranous
ossification are correct:
A) Is source of most of the flat bones
B) Is source of most of the long bones
C) Begins from mesenchymal condensation
D) Starts from the bone collar formation
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
QUESTIONS WITH SOLUTIONS GRADED A+
◉ The conducting zone of the respiratory system:
A) Includes the upper airways, trachea and the bronchial tree (including
the terminal bronchioles)
B) Is designed for airflow and respiration
C) Includes only the nose and the pharynx
D) Is designed for olfactory
E) A and C are correct
F) B and D are correct. Answer: A) Includes the upper airways, trachea
and the bronchial tree (including the terminal bronchioles)
◉ ***The bronchial tree starts with the primary bronchi:
A)And ends with the respiratory bronchioles
B) And on each section is lined with the simple columnar epithelium
C) And is composed of submucosa with plates of fibrocartilage
D) And is part of the conducting portion
E) A and C are correct
F) B and D are correct. Answer: D) And is part of the conducting portion
,◉ ***The feature of skeletal muscles is:
A) Composed of mononucleated cells
B) Have myofibrils that does not possess A bands
C) Are composed of bundles of multinucleated fibers
D) Their contraction is slow and not subject to voluntary control
E) A and C are correct
F) B and D are correct. Answer: C) Are composed of bundles of
multinucleated fibers
◉ ***In the skeletal muscle thin filaments are composed of:
A) Actin
B) Myosin
C) Tropomyosin
D) Light and heavy chains
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
◉ ***The contraction of skeletal muscle requires:
A) GTP
B) ATP
C) Mg ions
D) Ca ions
,E) A and C are correct
F) B and D are correct. Answer: F) B and D are correct
◉ ***Sarcomere:
A) Is the basic contractile unit of skeletal muscle
B) Is the basic contractile unit of smooth muscle
C) Consist of thick and thin filaments
D) Extends from A band to M line
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
◉ ***What cell type secretes ACTH?
A) Lactotropic cells
B) Thyrotropic cells
C) Somatotropic cells
D) Corticotropic cells
E) A and C are correct
F) B and D are correct. Answer: D) Corticotropic cells
◉ ***Which of the following phrases concerning osteocytes are correct:
A) Oval active cells
B) Placed in Howship's lacunae
, C) Secrete osteoid
D) Almond-shaped cells
E) A and C are correct
F) B and D are correct. Answer: D) Almond-shaped cells
◉ ***Periosteum consists of:
A) Outer layer of collagen fibers and fibroblasts
B) Outer layer of osteoprogenitor cells
C) Inner layer of osteoprogenitor cells
D) Inner layer of collagen fibers and fibroblasts
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
◉ ***Which of the following phrases concerning intramembranous
ossification are correct:
A) Is source of most of the flat bones
B) Is source of most of the long bones
C) Begins from mesenchymal condensation
D) Starts from the bone collar formation
E) A and C are correct
F) B and D are correct. Answer: E) A and C are correct
