Explanation

Gram staining is commonly used to identify Staphylococcus aureus, which appears as Gram-positive (purple) cocci in clusters.

This basic test helps differentiate it from other bacteria early in diagnosis.

Explanation

Buffaloes are more susceptible to Hemorrhagic Septicemia, a severe bacterial disease caused by Pasteurella multocida.

It leads to high fever, swelling in the throat region, and sudden death if untreated.

Explanation

Norepinephrine is the primary neurotransmitter released by postganglionic neurons in the sympathetic nervous system.

It prepares the body for "fight or flight" responses by increasing heart rate, blood pressure, and alertness.

Explanation

In cows, the normal presentation during birth is anterior—forelimbs and head come out first.

This position ensures easier passage through the birth canal and reduces risk of complications.

Explanation

Most anesthetics enhance the action of GABA (an inhibitory neurotransmitter) by increasing Cl⁻ ion influx into neurons.

This hyperpolarizes the neuron, making it less excitable and leading to unconsciousness.

Explanation

Artemisinin is a specific anti-protozoan drug used primarily to treat malaria, a protozoal disease caused by Plasmodium species.

It works by producing free radicals that damage protozoan proteins and membranes.

Explanation

Intramedullary nailing involves inserting a metal rod into the marrow canal of the bone, offering strong internal support.

It is considered the most effective and stable treatment for long bone fractures like femur or tibia.

Explanation

When an injection is not properly administered into the vascular lumen (e.g., misplaced or irritant solution leaks into surrounding tissues), the most immediate and common complication is:

Phlebitis:

Inflammation of the vein due to chemical irritation, mechanical trauma, or infection.

Symptoms: Pain, redness, swelling, and warmth along the vein.

Explanation

Flat bones (e.g., skull, ribs, sternum) are thin and flattened.

They providing protection (e.g., for organs) and broad surfaces for muscle attachment.

Explanation

Refined flour has a high glycemic index, which can contribute to diabetes and obesity.

It lacks fiber and essential nutrients compared to whole grains.