MFOM (only Fri. content)
Histology
Anatomy
Morphology
Radiology
100
What is the mechanism of Noncompetitive Enzyme inhibition?
a. The inhibitor binds to the allosteric site
b. The inhibitor competes with substrates for active site.
c. Inhibitor binds only to enzyme-substrate complex
d. The Inhibitors have high affinity and causes permanent enzyme inactivation
a. The inhibitor binds to the allosteric site
100
How long do Erythrocytes normally survive in circulation?
120 days
100
innervation of the anterior compartment of the arm?
innervation of the posterior compartment?
Musculocutaneous nerve; radial nerve
100
Maxillary 1st premolar calcification timeline?
1.5-2 years
100
Describe Secondary Radiation
x-radiation that is created when primary beam interacts with matter, which is less penetrating. Also known as scatter, and can travel in different directions in patient's body or out of operatory.
200
Two proteins associated with lipid bilayer?
transmembrane and peripheral
200
What is a characteristic feature of Eosinophils? are they granular or agranular?
they have a Bilobed nucleus
200
What nerve inervates the Serratus Anterior Muscle?
a. Dorsal Scapular Nerve
b. Thoracodorsal N.
c. Long Thoracic N.
d. Musculocutaneous N.
C. Long thoracic nerve
200
Mandibular 2nd premolar calcification timeline?
2-2.5 years
200
what is the black arrow pointing to? what is the RO section surrounding it?
Lingual Foramen; genial tubercle
300
Which type of transport requires ATP hydrolysis?
A. Simple diffusion
B. Facilitated diffusion
C.Primary active transport
D. Osmosis
C: Primary active transport
300
Which formed element of the blood arises from megakaryocytes?
platelets
300
Three major components of the cubital fossa?
TAN- Tendon of biceps brachii, Brachial Artery, Median Nerve
300
Compared to maxillary canines, mandibular canines have:
A) A more developed lingual surface
B) A sharper cusp
C) Less convex labial surface
D) Longer roots
C --> less convex labial surface --> compared to maxillary canines
300
Identify each structure associated with each color
red: external oblique ridge
yellow: Mylohyoid (internal oblique) ridge
Green: submandibular fossa
Pink: Inferior border of mandible
400
The energy that must be supplied for molecules to react with one another is called the ___?
activation energy
400
Lymphoid Structures derive embryonically from?
Mesoderm
400
What nerve inervates the Pectoralis Major Muscle?
a. Medial Pectoral Nerve
b. Medial Brachial Cutaneous Nerve
c. Lateral Pectoral Nerve
d. Medial and Lateral Pectoral Nerve
D. Medial and Lateral Pectoral nerve
400
The mandibular canine usually erupts at:
A) 6–7 years
B) 9–10 years
C) 11–12 years
D) 12–14 years
B) 9-10 years
400
Identify this structure
Naso-labial fold
500
What disease is related to the Post-Traslation Modification: Hydroxylation and is characterized by “elastic skin”
a. Marfan’s Syndrome
b. Williams Syndrome
c. Ehler’s Danlos Syndrome
d. Hurler Syndrome
Ehler's Danlos Syndrome
500
What type of epithelium makes up the endothelium (internally lines the system) of the cardiovascular system?
Continuous, simple squamous epithelium
500
Which roots of the brachial plexus contribute to the long thoracic nerve?
C5, C6, C7
500
The mandibular canine usually erupts at:
A) 6–7 years
B) 9–10 years
C) 11–12 years
D) 12–14 years
6 & 11
500
Identify each structure with their assigned pictures
Green: lateral pterygoid plate
Purple: Tuberosity of maxillla
Red: Hamular process
Gray: Coronoid process
600
Which Enzyme catalyzes lysis of a substrate by breaking bonds or generating double bonds between the products?
a. Oxidoreductases b. Translocases c. Lyases d. Ligases
C. Lyases
600
what is the structure that joins myocardial cells end to end and side to side?
Intercalated discs
600
What nerve innervates the Teres Major Muscle?
a. Lower subscapular N.
b. Upper Subscapular N.
c. Radial N.
d. Median N.
A. Lower subscapular nerve
600
Which characteristic best distinguishes mandibular from maxillary canines?
A) Mandibular crown is wider mesiodistally
B) Mandibular lingual surface is less developed
C) Mandibular root is always longer
D) Mandibular cingulum is more prominent
B) Mandibular lingual surface is less developed – Key difference.
600
what is the definition of "quality" when discussing an x-ray beam? How about quantity?
the energy of the beam; # of x-rays produced
700
An increased enzyme concentration (increase/decreases) the rate of a reaction?
Increases
700
Which granulocyte on a slide has 'Mickey mouse ear' shaped nuclei
neutrophils
700
What is the motor innervation of the Median Nerve?
LOAF Muscles of the hand
700
Which cusps are generally equal in size on mandibular molars?
A. Mesiobuccal and distobuccal
B. Lingual cusps
C. Buccal cusps
D. Distal cusps
B) Lingual Cusps
700
Describe the Inverse Square Law
intensity of radiation is inversely proportional to the square of the distance from the source of radiation.
800
What happens to the Km and Vmax during Competitive inhibition?
Km Increases, Vmax remains unchanged
800
Which part in the lymphatic system reaches its maximum size during puberty and contains Lamellar centers known as Hassall corpuscles
Thymus
800
Origins and insertion of the Biceps brachii
Long head: Supraglenoid tubercle on superior border of scapula
Short head: Coracoid process of scapular
Insertion: both converge at the radial tuberosity of the radius
800
. A patient presents with pain in an impacted mandibular molar. Which tooth is most likely involved?
A. Mandibular first molar
B. Mandibular second molar
C. Mandibular third molar
D. Mandibular premolar
C mandibular third molar
800
What are the two factors that influence quality of the x-ray beam?
kVp: increases or decreases mean energy
Filtration: takes out low energy bean and makes beam higher energy
900
What are Microvilli composed of? Cilia?
Microvilli: actin filaments
Cilia: microtubules
900
What kind of tissues lines the pharyngeal tonsils?
pseudostratified columnar epithelium
900
Where is the humerus most commonly fractured? What can often be damaged by these types of fractures?
Surgical neck is common site of fractures; axillary nerve and posterior circumflex humeral artery wrap around site
900
Which constant feature is observed in mandibular third molars?
A. BL dimension is greater than MD dimension
B. MD dimension is greater than BL dimension
C. Roots are always separate and divergent
D. Occlusal design is symmetrical
B.
MD dimension is greater than BL dimension
900
What are the three factors that affect density?
mA --> more x-rays
kVp --> higher energy x-rays
time --> more x-rays
1000
Which vesicular coat assists in transport from the plasma membrane to golgi apparatus
Clathrin coat
1000
Which capillary has a wide and irregular lumen, highly specialized and, there lacks a basement membrane?
Sinusoidal capillary
1000
Draw the brachial plexus from memory!
Person who draws it the closest gets the point.
1000
Which statement is TRUE about mandibular third molars?
A. They are the largest of mandibular molars
B. They are frequently impacted
C. They always have 5 cusps
D. They usually erupt before premolars
B. they are frequently impacted
1000
What are x-ray beams composed of? What is their mass and charge?
they are made up photons, and have no mass and no charge
1100
What is the function of SarI?
responsible for assembly the COPII coat
1100
Which valve connects the right atrium to the right ventricle?
Tricuspid Valve
1100
Which nerve innervates the triceps brachii?
radial nerve
1100
Typical eruption age of mandibular third molars is:
A. 6–7 years
B. 11–13 years
C. 17–21 years
D. 25–30 years
C. Mandibular 3rd molars
1100
When the high-speed electrons hit the anode/target, they create photons by two types of radiation. What are those two types?
Characteristic and Braking/Bremsstrahlung