Download Histology NBME Full Questions 2024-2025: Comprehensive Review with Verified Answers and more Exams Histology in PDF only on Docsity!
Histology NBME Full Questions 2024-2025.
Questions and Correct, Verified Answers.
Graded A
. Respiratory tract contains: a. Simple cuboidal epithelium b. Simple columnar epithelium c. Pseudostratified epithelium d. Transitional epithelium e. Stratified squamous keratinized epithelium - ANSc. Pseudostratified epithelium ***A nephron includes all of the following components except: A. A thin limb of the loop of Henle B. A glomerulus C. A distal convoluted tubule D. Pars recta of the proximal tubule E. A collecting tubule F. A renal corpuscle - ANSE. A collecting tubule ***A portal space contains: A. Portal vein, portal artery, bile duct, lymphatic vessels B. Portal vein, portal artery, bile duct C. Central vein, central artery, bile duct
D. Trabecular vein, trabecular artery, bile duct E. A and B are correct F. No answer is correct - ANSA. Portal vein, portal artery, bile duct, lymphatic vessels ***A process by which liquid droplets are ingested by living cells is: A) Active transport B) Phagocytosis C) Pinocytosis D) Facilitated diffusion E) A and C are correct F) B and D are correct - ANSC) Pinocytosis ***A process by which liquid droplets are ingested by living cells is: A. Active transport B. Phagocytosis C. Pinocytosis D. Facilitated diffusion E. A and C F. B and D - ANSC. Pinocytosis ***Ability to antigen presentation: A. Only immunocompetent cells possess it B. Is a feature of all human nucleated cells C. Is a feature of all the cells of the human body
B. T lymphocytes C. Melanocytes D. Keratinocytes E. Merkel's cells F. B lymphocytes - ANSB. T lymphocytes ***All of the following are pro-apoptotic factors except: A. TNF B. TGF beta C. Oxidants D. Ionizing radiation E. Zinc F. FAS-L - ANSA. TNF ***All of the following are product of keratinocytes, except: A. Keratin- B. Phospholipids C. Flaggrin D. Involucrin E. Eumelanin F. A and B are correct - ANSE. Eumelanin ***All of the following are skin functions, except: A. Protection from pathogens and damage
B. Sensation C. Control of evaporation D. Corticosterone production E. Secretion and excretion F. A and B are correct - ANSD. Corticosterone production ***All of the following components of endomembrane system, except: A. Golgi apparatus B. Smooth ER C. Lysosomes D. Rough ER E. Mitochondria F. Nuclear envelope - ANSE. Mitochondria ***All the features of cardiac muscle are true EXCEPT of: A. Numerous mitochondria B. Fatty acids stored in a lipid droplets C. T tubules associated with two lateral cisternae endoplasmic reticulum D. Contraction is involuntary E. A and C are correct F. B and D are correct - ANSC. T tubules associated with two lateral cisternae endoplasmic reticulum ***Apoptosis: A. Is the process of programmed cell death
B. Collects all genetic information C. Mature cells are provided with nuclei of various shapes D. All cells have the nucleus E. A and C F. B and D - ANSC. Mature cells are provided with nuclei of various shapes ***Choose the proper bile excretory pathway in the hepatic lobule(from center to periphery): A. Periportal bile ductule - portal bile duct - bile canaliculus B. Periportal bile ductule - bile canaliculus - portal bile duct C. bile canaliculus - periportal bile ductule - portal bile duct D. portal bile duct - bile canaliculus - periportal bile ductule E. A and C are correct F. B and D are correct - ANSC. bile canaliculus - periportal bile ductule - portal bile duct ***Chromophobes: A. They stain blue in mallory's staining B. They produce FSH and stimulate spermatogenesis C. They produce LH and promote ovarian follicle maturation D. One of three cell types in hypophysis E. All answers are correct F. A and B are correct - ANSD. One of three cell types in hypophysis ***Collagen precursor lacking non-helical ending is called
A. Preprocollagen B. Procollagen C. Tropocollagen D. Collagen fibril E. A and C are correct F. B and D are correct - ANSC. Tropocollagen ***Compact bone consists of: A. Trabeculae B. Osteons C. Randomly organized collagen fibers D. Interstitial lamellae E. A and C F. B and D - ANSF. B and D ***Cytoplasmic processes found on the apical surface of absorptive cells are called: A. Villi B. Microvilli C. Plicae D. Cilia E. A and C are correct F. B and D are correct - ANSB. Microvilli
F) B and D are correct - ANSE) A and C are correct ***Dentin: A. Is a calcified tissue of the tooth B. Is produced by? C. Is placed in dental chamber D. Is present only in deciduous teeth E. A and C F. B and D - ANSA. Is a calcified tissue of the tooth ***Distal convoluted tubule: A. Is lined with simple columnar epithelium B. Macula densa C. Well developed brush border D. Secretes potassium ions E. A and C are correct F. B and D are correct - ANSF. B and D are correct ***DNA is permanently inactive in transcription for all cell types in the organism in which of the following: A. Constitutive heterochromatin B. Facultative heterochromatin C. Both constitutive and facultative heterochromatin D. Euchromatin E. Neither heterochromatin nor euchromatin
F. B and C are correct - ANSA. Constitutive heterochromatin ***During inhalation: A. Diameter and length of the bronchi increase B. Rib cage expands C. Diameter of the alveoli decreases D. Diaphragm contracts upwards E. A and C F. B and D - ANSB. Rib cage expands ***During interphase: A. G1 phase constitutes the first phase B. Meiosis takes place C. Cellular DNA replicated in the S-phase D. Telophase is the final phase E. A and C F. B and D - ANSE. A and C ***During telophase: A. Daughter cells structures are reconstructed B. Chromatin condensation occurs C. Nuclear envelope is regenerated D. The mitotic spindle structures are retained E. A and C
F) B & D - ANSF) B & D
***Epithelium lining of the vascular system is: A. Mesothelium B. Transitional epithelium C. Pseudostratified epithelium D. Endothelium E. A and C are correct F. B and D are correct - ANSD. Endothelium ***Example of lysosomal enzyme is/are A. Oxidireductases B. Acid phosphatase C. Catalase D. Nuclease E. A and C are correct F. B and D are correct - ANSF. B and D are correct ***Follicle-stimulating hormone (FSH): A. Stimulates sperm production in the male testis B. Stimulates formation of mammary glands in the female as well as the production of milk C. Stimulates secretion of hormones in the adrenal glands D. Induces ovulation in females E. Stimulates Leydig cells
F. No answer is correct - ANSA. Stimulates sperm production in the male testis ***Glycoprotein P is responsible in the cell for: A. Elimination of toxins from the cell because it is localized on mitochondrial membrane B. Elimination of toxins from the cell because it is localized on cellular membrane C. Transport of any protein from environment to the cytoplasm D. Activation of G proteins because it is a part of G protein receptor E. Transport of ribosomal proteins from cytoplasm to nucleus F. Determination of cell polarity - ANSB. Elimination of toxins from the cell because it is localized on cellular membrane ***Hepatocytes are involved in: A. The regulation of blood flow in the sinusoids B. The synthesis of glycogen C. The metabolism of aged erythrocytes and hemoglobin digestion D. The detoxification of drugs and toxins E. A and C are correct F. B and D are correct - ANSF. B and D are correct ***Howship's lacunae are shallow depressions occupied by: A. Osteoblast B. Osteocytes C. Osteoclasts D. Monocytes
C. The portal lobule D. The liver acinus E. A and C are correct F. B and D are correct - ANSC. The portal lobule ***In the skeletal muscle thin filaments are composed of: A. Actin B. Myosin C. Tropomyosin D. Light and heavy chains E. A and C F. B and D - ANSE. A and C ***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 - ANSE) A and C are correct ***In the stomach pepsinogen is secreted by: A. Parietal cells B. Chief cells
C. Mucous neck cells D. Gastric enteroendocrine cells E. A and C F. B and C - ANSB. Chief cells ***Keratinocytes are connected: A. With melanocytes by desmosomes B. With basal lamina by hemidesmosomes C. With Langherans' cells by desmosomes D. With Merkel cells by focal adhesions E. A and C F. B and D - ANSB. With basal lamina by hemidesmosomes ***Lysozyme: A. Is an enzyme with antimacrobial activity B. Is produced in intercalated ducts C. Is part of the innate immune system D. Is produced in striated ducts E. A and C F. B and D - ANSE. A and C ***MAPs are: A. Proteins connected to intermediate filaments B. Kinesins and dyneins
A. 17β-estradiol alone B. Progesterone alone C. hCG D. Androstenedione E. Both 17β-estradiol and progesterone F. FSH and LH - ANSB. Progesterone alone ***Myoepithelial cells: A. Surround the secretory portion of salivary gland B. Form serous demilunes C. Are called basket cells D. Form interlobular ducts E. A and C F. B and D - ANSE. A and C ***Negative feedback: A. Can trigger a reaction from the endocrine system to restore homeostasis B. Is controlled by the pancreas C. Means there is an underproduction of a hormone by peripheral gland D. Is directly controlled by the liver E. A and C F. B and D - ANSA. Can trigger a reaction from the endocrine system to restore homeostasis ***Nissl bodies in perikaryon are composed of:
A. Mitochondria B. Golgi complex C. Cytochromes D. RER and free ribosomes E. Lysosomes F. Peroxisomes and microbodies - ANSD. RER and free ribosomes ***Nuclear pores: A. Combine to form a hexagonal structure B. Have 50nm in diamater C. Their number is not connected with cellular actvitiy D. Nuclear lamina is connected to their inner rings E. A and C F. B and D - ANSD. Nuclear lamina is connected to their inner rings ***Occluding junctions: A. Provide mechanical stability to epithelial cells B. Are called tight junctions C. Allow direct communication between adjacent cells D. The zonula occludens proteins ZO-1, ZO-2 and ZO-3 are the transmembrane proteins in occluding junctions E. A and C are correct F. B and D are correct - ANSB. Are called tight junctions ***Osteoclasts are responsible for:
