Embriology Review Part I - take the quiz
Embryology Review Quiz
Test your knowledge of embryology and developmental biology with our comprehensive quiz! This quiz covers various topics including tissue origins, muscle types, and the development of different body parts. Whether you're a student, teacher, or simply interested in the subject, this challenge is designed for you.
Key Features:
- 71 multiple-choice questions
- Covers foundational and advanced concepts
- Enhance your understanding of embryological processes
Each tissue originates from mesoderm, EXCEPT one. Which is the EXCEPTION?
Bone
Liver
Blood
Muscle
Intercalated disks are present in which type of muscle?
Cardiac
Smooth
Skeletal
Voluntary
Which cellular component facilitates protein synthesis?
Lysosomes
Mitochondria
Ribosomes
Plasmalemma
Which phase of the cell cycle is characterized as the initial resting stage?
S Phase
G I Phase
G 2 Phase
Prophase
Which organelle produces microtubules?
Nucleus
Centriole
Golgi apparatus
Endoplasmic reticulum
T cells, B cells, NK cells, and macrophages are produced in the _________.
Spleen
cerebellum
Lymph nodes
Bone marrow
The junctional epithelium of gingiva is replenished every _____ days.
1 to 3
4 to 6
7 to 9
10 to 13
Buccal mucosa is replenished every ____ days.
4-6 days
7-9 days
10-14 days
15-20 days
Which epithelium consists of several layers, with only the basal cell layer in contact with the basal lamina?
Simple
Stratified
Squamous
Pseudostratified
All body sensations are relayed to the ______ and the _______.
brain; spinal cord
Afferent; efferent systems
Voluntary; involuntary muscles
Sympathetic; parasympathetic divisions
Impulses pass from the CNS to involuntary muscles via the _____ system.
Sensory
Afferent
Somatic
autonomic
Internal organs (viscera) receive most of their neural impulses from which nervous system?
Somatic
Sensory
Afferent
Autonomic
Which cell supports the nervous system and is 5 to 50 times more numerous than neurons?
Neuroglia
Myoblast
Leukocyte
Melanocyte
The spinal cord consists of how many segments?
21
22
30
31
Tissues are most susceptible to teratogens during the proliferative period
True
False
The _______ provides an ideal environment for the implantation and growth of the embryo.
ovary
Uterine tube
Myometrium
Endometrium
Which of the following is not a type of cartilage?
Dense
Elastic
Fibrous
Hyaline
What are the three types of muscle tissue?
Cardiac, skeletal, and smooth
Striated, voluntary, and smooth
Cardiac, skeletal, and voluntary
Voluntary, involuntary, and striated
Ligaments and tendons are composed of which tissue?
Neural
Muscle
Epithelial
Connective
Which function is associated with the skin?
Excretes waste products
Absorbs nutrients from ingested food
Supplies a framework for muscle and ligament attachments
Relays information from the glands to the central nervous system
The mandible is formed from which pharyngeal arch?
First
Second
Third
Fourth
The superior parathyroid develops from the ________ pharyngeal pouch, whereas the inferior parathyroid develops from the _______.
second; fifth
fifth; second
Third; fourth
fourth; third
Which of the following arises from the first pharyngeal arch?
Tissues that form the cheeks
Inferior hyoid
Laryngeal cartilages
Muscles of facial expression
The second pharyngeal arch is also known as the __________ arch.
Hyoid
Inferior
superior
Mandibular
The mandible is formed from which pharyngeal arch?
First
Second
Third
Fourth
After 7 week, blood supply shifts from the internal to the external carotid for the face and neck.
True
False
Meckel’s cartilage provides structure for the developing _______.
Maxilla
Mandible
Temporal bone
Zygomatic bone
Meckel’s cartilage acts as a framework for the developing mandible.
True
False
Fibrous joint which 2 opposing surfaces are united in fibrous connective tissue
Synchondrosis
Synostosis
Syndesmosis
Fusion of 2 bones
Synostosis
Syndesmosis
Synchondrosis
Union of 2 bones that have been seperated by cartilage is called synchondrosis
True
False
The face develops in the ____________ prenatal weeks
5-9 weeks
4-7 weeks
7-9 weeks
8-11 weeks
In the fifth week, the frontal process becomes known as the:
Frontonasal process.
philtrum
Medial nasal process.
Lateral nasal process.
The heart begins pumping blood during which week of gestation?
Fourth
Fifth
Sixth
Seventh
Bilateral nasal placodes appear in the seventh week of gestation.
True
False
Which significant change occurs in the fifth prenatal week?
The bilateral placodes develop into nostrils.
The palatine shelves grow medially and contact the tongue.
The eyes move from the side of the face to the front of the face.
The heart begins to beat.
Auricular hillocks develop near which location?
Tuberculum impar
External ear canal
Oronasal optic groove
A combination of genetic and _____ factors are associated with palatal and facial clefts.
Social
Behavioral
Age related
Enviornmental
The stages of tooth development occur in which order?
Bud, cap, bell
Bell, bud, cap
Cap, bell, bud
Bud, bell, cap
During root development, the epithelial diaphragm __________.
Fuses to the stratum intermedium
Surrounds the apical opening of the dental pulp
Forms the cortical plate, which covers the mandible
Deposits an enamel matrix along the dentoenamel junction
Hertwig's root sheat is responsible for?
Length
Curvature
Number of roots
All of the above
Enamel forms from which type of cells?
Ectoderm
Mesoderm
Endoderm
Dental papilla
Tooth development relies on an interaction between the ectoderm and mesenchyme.
True
False
Which permanent tooth forms from the general lamina?
Molar
Incisor
Canine
Premolar
Which layer of the enamel organ is most closely associated with blood vessels?
Stellate reticulum
Stratum intermedium
Inner enamel epithelium
Outer enamel epithelium
The permanent teeth that replace the primary teeth are called ______.
Supportive
Accessional
Overlapping
Successional
After the enamel organ differentiates, the dental lamina begins to __________.
Divide
Reform
Expand
Degenerate
Which of the following is the origin of osteoclasts?
Fibroblasts
Monocytes
Amino acids
Root resorption
Special _______ cells destroy collagen fibers by ingestion.
fibroblast
Osteoclast
Osteoblast
Amino acid
Ameloblasts secrete enamel before odontoblasts secrete predentin.
True
False
Which is a genetic disorder that makes teeth susceptible to excessive wear?
Bruxism
Dentinogenesis imperfecta
Occlusion malware
Thyroglossal duct
Compact bone is the most highly calcified tissue in the human body.
True
False
Primary and permanent teeth have a similar enamel prism structure, except at the tooth surface.
True
False
Why are humans considered to be diphyodonts?
Because the adult molars are intended for chewing plants.
Because they possess two dentitions.
Because the adult canines are pointed and have a single cusp.
The prefunctional eruptive phase is characterized by dormancy in the tissues overlying, surrounding, and underlying the teeth.
True
False
From birth, every 4 teeth emerge per every 6 months of age. This is called?
4/6 rule
6/4 rule
Tooth development
Tooth eruption stage
Which of the following best defines ankylosis?
The eruption of a tooth into a space occupied by an opposing tooth
A process that leads to tooth eruption
A fusion of tooth roots to the bony socket
Which is the first functional stage of change that each ameloblast undergoes?
Secretion
Maturation
Morphogenesis
Organization and differentiation
Ameloblasts produce _______ as they migrate.
Cementoid
Enamel rods
Epithelial rests
Dentinal tubules
Incremental lines result from the rhythmic, recurrent deposition of enamel
True
False
Enamel is composed of ______ hydroxyapatite.
26
53
90
96
Enamel is approximately ______ thick at the occlusal or incisal surface.
1 um
9 um
2.5 mm
2.5 um
Which part of the enamel rod is most sensitive to demineralization?
Tail
Core
Head
Sheath
Which of the following best defines the neonatal line?
An accentuated incremental line.
A defect caused by the misdirection of enamel rods.
Light and dark enamel rod groups, made visible with light.
A series of dark growth rings noticeable in the cross section of enamel.
Which statement is true?
Tubular defects are associated with enamel lamellae.
Lamellae provide increased resistance to dental caries
Breathing cold air is a risk factor in developing enamel lamellae.
Enamel lamellae are microscopic cracks in the surface of enamel
Which one of these does not facilitate the spread of dental caries
Fluoride
Dentinogenesis imperfecta
Prismsless enamel
None of the above
Which layer of the enamel organ is most closely associated with blood vessels?
Stellate reticulum
Inner enamel epithelium
Outer enamel epithelium
Stratum intermedium
In the hunter-schreger phenomenon, adjacent rod groups lie at the right angles to each other
True
False
Enamel rods extend from the DEJ to the enamel outer surface
True
False
The three parts of the tongue tissue is
Tuberculum impar
Two lateral lingual swellings
First half, middle, and back
Both A and B
What cranial nerves innervate the tongue?
5th, 7th, 9th, 10th, and 12th
5th, 6th, 7th, 10th, and 11th
6th, 7th, 11th, and 12th
None of the above
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