Teaching Anatomy and Biology
A telomere is a region of repetitive nucleotide sequences associated with specialized proteins at the ends of linear chromosomes.
Human adult eyeballs: 25 mm in diameter (about 1 inch)
Pingpong balls: 40 mm in diameter
Golf balls: 43 mm in diameter
The vermilion border is the sharp, distinct, and often reddish-pink line separating the skin of the face from the red part of the lips. This, sometimes called the lip line.
: A narrow, vertical groove or indentation in the midline of the upper lip, extending from the nose to the vermilion border.
How DNA virus infects cells.
DNA viruses infect cells by attaching to specific surface receptors, entering via membrane fusion or endocytosis, and releasing their genome into the host nucleus.
Once inside, the virus hijacks the cell's machinery to replicate its DNA and produce proteins, ultimately assembling new virions that are released, often destroying the host cell.
The uvula is a small, teardrop-shaped piece of fleshy tissue and muscle hanging from the center of the soft palate at the back of the throat. It helps with swallowing by blocking food/liquid from entering the nasal cavity, aids in speech by producing saliva for lubrication, and is part of the gag reflex.
Amylase is a crucial digestive enzyme that breaks down complex carbohydrates and starches into simple sugars like maltose and glucose.
Tonsils are lymphoid tissue aggregates located on both sides of the back of the throat, serving as the immune system's first line of defense against ingested or inhaled pathogens.
The human rib cage, consisting of 24 ribs (12 pairs), forms a protective, flexible, and cage-like structure.
The primary role is guarding vital organs like the heart and lungs.
Lip tubercles are the natural "bumps" or fleshy projections on the lips that contribute to their shape, fullness, and three-dimensional projection.
There are five primary tubercles: upper lip (3 tubercles), lower lip (2 tubercles).