The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Did you know?
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Did you know?
Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.
Structure of an ovule developing into a seed.
The structure and function of the human testis.
Motifs of protein secondary structure
Structure of phosphate ion and hybrid atomic orbitals of phosphate ion
Crystal structure of a synthetic Holliday junction