Body Facts & Fiction Q15
MORE INFO: Qualitative decreases in maternal brain size have been observed late in pregnancy. Three-dimensional T1-weighted MR volume images were obtained in nine healthy participants before and after delivery. Both the healthy and preeclamptic groups had a reduction in brain size during pregnancy that was maximal at term and that reversed by 6 months after […]
Body Facts & Fiction Q14
MORE INFO: The enteric nervous system’s network of nerves, neurons and neurotransmitters extends along the entire digestive tract – from the esophagus, through the stomach and intestines, and down to the anus. Because the enteric nervous system relies on the same type of neurons and neurotransmitters that are found in the central nervous system, some […]
Body Facts & Fiction Q13
MORE INFO: Scientific studies of children have shown that, between birth and the age of six, the brain quadruples in size and reaches 90% of its adult size. The research also shows that neural connections forming inside the brain during this period are highly influenced by the environment in which the child is raised – […]
Body Facts & Fiction Q12
MORE INFO: Normally the total WBC count for an adult ranges from 5,000 to 10,000/mm3. Leukocytosis (WBC>10,000/mm3) can indicate infection, inflammation (possibly from allergies), tissue damage or burns, dehydration, thyroid storm, leukemia, stress, or steroid use. The mean normal platelet count is between 250,000 and 260,000 cells/mm3, although there is a wide range of accepted […]
Body Facts & Fiction Q11
MORE INFO: The cardiovascular and lymphatic are both integral parts of the circulatory system. The cardiovascular system basically moves blood throughout the body. While the lymphatic system is part of the circulatory system, comprising a network of conduits called lymphatic vessels. Rather than blood the lymph systems carries a clear fluid called lymph (from Latin […]
Body Facts & Fiction Q10
MORE INFO: This myth probably came from experiments in the 1950s, when military researchers exposed subjects to frigid temperatures. The final results concluded that 40-45% of all body heat was lost through the head due to the nature of the experiment leaving the participants’ heads exposed to the cold air. In reality, the head only […]
Body Facts & Fiction Q9
MORE INFO: The 10% of the brain myth states that humans generally use only one-tenth (or some other small fraction) of their brains. It has been misattributed to many famous scientists and historical figures, notably Albert Einstein. By extrapolation, it is suggested that a person may ‘harness’ or ‘unlock’ this unused potential and increase their […]
Body Facts & Fiction Q8
MORE INFO: A resting heart rate is the number of times your heart beats per minute when you’re not engaged in a physical activity. What’s normal depends on your age and activity level but, generally, a resting heart rate of 60 to 80 beats per minute (BPM) is considered to be in the normal range. […]
Body Facts & Fiction Q7
MORE INFO: The most common brain cells are neurons and non-neuron cells called glia. The average adult human brain contains approximately 100 billion neurons, and just as many—if not more—glia. Although neurons are the most famous brain cells, both neurons and glial cells are necessary for proper brain function. SOURCE: https://dana.org/article/cells-of-the-brain/#:~:text=The%20most%20common%20brain%20cells,necessary%20for%20proper%20brain%20function.
Body Facts & Fiction Q6
MORE INFO: A typical heart has two upper and two lower chambers. The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of the heart. The heart valves, which keep blood flowing in the right direction, are gates at the chamber […]