A man and his wife went in for fertiliy testing after trying to have a baby for over a year. After examining the man’s sperm under the microscope, the doctor told the man that his sperm do not swim properly. Their tails seem smaller and the doctor suspects that the man has a genetic disorder, preventing his sperm from swimming efficiently to unite with his wife’s egg. . Which organelle or cellular structure might not be able to perform its job and have defective proteins as a result of this genetic disorder? Explain your answer below.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.