Forwarded from AAU | Black Lion School of Medicine ππ
Which layer of the cornea is primarily responsible for maintaining its dehydration and transparency?
Anonymous Quiz
19%
Epithelium
28%
Bowman's layer
14%
Stroma
26%
Descemetβs membrane
12%
Endothelium
π2
Forwarded from AAU | Black Lion School of Medicine ππ
Which of the following structures of the eye is derived from neural ectoderm?
Anonymous Quiz
16%
Sclera
15%
Corneal stroma
54%
Retina
11%
Lens capsule
4%
Iris stroma
π2
Forwarded from AAU | Black Lion School of Medicine ππ
Which artery primarily supplies the inner two-thirds of the retina?
Anonymous Quiz
11%
Short posterior ciliary artery
50%
Central retinal artery
16%
Long posterior ciliary artery
12%
Anterior ciliary artery
12%
Ophthalmic artery
π2
Forwarded from AAU | Black Lion School of Medicine ππ
The fovea centralis is unique because:
Anonymous Quiz
16%
It contains only rod photoreceptors
7%
It is the thickest part of the retina
52%
It has a high density of cone photoreceptors
20%
It is avascular and relies solely on the central retinal artery
6%
It is located at the optic disc
π2β€1
Forwarded from AAU | Black Lion School of Medicine ππ
Which structure forms the majority of the eyeβs refractive power?
Anonymous Quiz
38%
Lens
35%
Cornea
14%
Aqueous humor
8%
Vitreous humor
4%
Iris
π2
Forwarded from AAU | Black Lion School of Medicine ππ
Which cranial nerve is responsible for carrying parasympathetic fibers to the ciliary ganglion controlling lens accommodation?
Anonymous Quiz
58%
CN III
8%
CN IV
17%
CN V1
7%
CN VI
10%
CN VII
π3
Forwarded from AAU | Black Lion School of Medicine ππ
Which cranial nerve is responsible for carrying parasympathetic fibers to the ciliary ganglion controlling lens accommodation?
Anonymous Quiz
58%
CN III
8%
CN IV
17%
CN V1
7%
CN VI
10%
CN VII
π1
Forwarded from AAU | Black Lion School of Medicine ππ
In the optic pathway, fibers from the nasal half of the retina:
Anonymous Quiz
15%
Remain ipsilateral
61%
Cross at the optic chiasm
17%
Synapse in the lateral geniculate nucleus directly
6%
Form the optic tract
1%
Enter the superior colliculus only
β€3
Forwarded from AAU | Black Lion School of Medicine ππ
The tensor tympani muscle is innervated by:
Anonymous Quiz
38%
CN V3 (mandibular branch)
42%
CN VII
11%
CN IX
6%
CN X
3%
CN XII
π1
Forwarded from AAU | Black Lion School of Medicine ππ
The macula of the utricle primarily detects:
Anonymous Quiz
21%
Angular acceleration in the horizontal plane
44%
Linear acceleration and head position
21%
Rotation of the head
10%
High-frequency sound
3%
Low-frequency sound
π1
Forwarded from AAU | Black Lion School of Medicine ππ
Which part of the cochlea contains endolymph and is rich in potassium?
Anonymous Quiz
22%
Scala vestibuli
19%
Scala tympani
50%
Scala media (cochlear duct)
6%
Oval window
3%
Round window
π2
Forwarded from AAU | Black Lion School of Medicine ππ
Which cranial nerve carries sensory information from the cochlea to the brain?
Anonymous Quiz
7%
CN V
11%
CN VII
75%
CN VIII
5%
CN IX
2%
CN X
π1
Forwarded from AAU | Black Lion School of Medicine ππ
Which ossicle articulates directly with the oval window?
Anonymous Quiz
14%
Malleus
14%
Incus
61%
Stapes
8%
Tympanic membrane
3%
Cochlear duct
β€1
Forwarded from AAU | Black Lion School of Medicine ππ
Which structure connects the middle ear to the nasopharynx to equalize pressure?
Anonymous Quiz
5%
External auditory canal
6%
Cochlear duct
85%
Eustachian tube
3%
Round window
2%
Oval window
β€1π1
Forwarded from AAU | Black Lion School of Medicine ππ
Which part of the ear is responsible for converting sound waves into neural signals?
Anonymous Quiz
14%
Tympanic membrane
53%
Cochlea
8%
Oval window
18%
Semicircular canals
7%
Auditory canal
π1
Forwarded from AAU | Black Lion School of Medicine ππ
Which amino acid is strictly ketogenic?
Anonymous Quiz
16%
Isoleucine
21%
Phenylalanine
22%
Tryptophan
29%
Lysine
11%
Tyrosine
π1
Forwarded from AAU | Black Lion School of Medicine ππ
Which molecule allosterically activates carbamoyl phosphate synthetase I (CPS-I)?
Anonymous Quiz
22%
Ornithine
15%
Arginine
42%
N-acetylglutamate
14%
Citrulline
7%
Glutamine
π2
A 6-year-old presents with a βslapped cheekβ rash. What is the cause?
Anonymous Quiz
18%
Rubella
16%
Measles
54%
Parvovirus B19
10%
Varicella
3%
Adenovirus
π2
Forwarded from AAU | Black Lion School of Medicine ππ
π Acute Cholangitis
Acute cholangitis is an acute bacterial infection of the biliary tree, most often triggered by obstruction of the common bile duct, commonly due to gallstones, strictures, or tumors.
The obstruction increases intraductal pressure, allowing bacteria to ascend from the duodenum and proliferate. Clinically, it classically presents with
- Charcotβs triad: fever, jaundice, and right-upper-quadrant pain.
- In more severe cases, Reynoldsβ pentad (triad + hypotension + altered mental status) indicates life-threatening sepsis.
Rapid diagnosis and management; fluids, antibiotics, and biliary decompression are essential to prevent complications. π¬π
Acute cholangitis is an acute bacterial infection of the biliary tree, most often triggered by obstruction of the common bile duct, commonly due to gallstones, strictures, or tumors.
The obstruction increases intraductal pressure, allowing bacteria to ascend from the duodenum and proliferate. Clinically, it classically presents with
- Charcotβs triad: fever, jaundice, and right-upper-quadrant pain.
- In more severe cases, Reynoldsβ pentad (triad + hypotension + altered mental status) indicates life-threatening sepsis.
Rapid diagnosis and management; fluids, antibiotics, and biliary decompression are essential to prevent complications. π¬π
π2β€1