NEET PG/NEXT (MCQs)

2021-06-15 18:00:02 Explanation

Pre Botzinger complex generates the rhythm for automated breathing.

These are also known as pacemaker cells located in the medulla

These are the first set of neurons which initiate inspiration

These neurons discharge rhythmically, and they product rhythmic discharges in the phrenic motor neurons. Open / Comment

2021-06-14 18:00:01 Explanation

The movements at the atlanto-axial joint allow a person to look left and right
The atlanto-axial joints include 3 synovial joints.

Median atlanto-axial joint: The central pivot joint between the dens of axis ad a ring formed by the anterior arch and transverse atlantal ligament.

Lateral atlanto-axial joints: Plain synovial joints between lateral masses of atlas and upper facets of the body of axis.

Movements: Movements at the atlanto-axial joint almost exclusively is rotation around the axis, which help side-to-side rotation of the head. The normal range of atlanto-axial rotation is about 40 degree. Open / Comment

2021-06-13 18:00:01 Explanation

Smooth muscles in the GI tract are innervated by both parasympathetic and sympathetic nerves.

Smooth muscles in the wall of the blood vessels and erector pili muscles in hair follicles are innervated only by sympathetic nerves.

Muscles that act at the elbow joint and muscles enclosed by epimysium are skeletal muscles that are innervated by somatic motor nerves Open / Comment

2021-06-12 18:00:02 Explanation

During necrosis, nuclear changes appear in one of the 3 patterns, all due to nonspecific breakdown of DNA

Karyolysis(Dissolution) is complete dissolution of the chromatin of a dying cell due to enzymatic degradation by endonucleases.

Pyknosis(Condensation) is irreversible condensation of chromatin in the nucleus of the cell undergoing necrosis or apoptosis characterized by nuclear shrinkage and increased basophilia.

Karyorrhexis(Fragmentation) is destructive fragmentation of the nucleus of a dying cell whereby its chromatin is disturbed irregularly throughout the cytoplasm. Open / Comment

2021-06-11 18:00:02 Explanation

Functions of GLUT transporters
•GLUT 1
o Basal Glucose update
•GLUT 2
o Intestine absorption
o Glycogen formation
o Insulin secretion
•GLUT 3
o Basal glucose update
•GLUT 4
o Insulin stimulated glucose uptake after meals
•GLUT 5
o Fructose transporter
•GLUT 7
o Glucose transporter in ER
•GLUT 8
o Insulin dependent
o Can transport glucose, fructose and galactose
•GLUT 9
o Urate transporter
•GLUT 11
o Fructose transporter Open / Comment