Final answer:
The attachment of the biceps muscle close to the elbow and near the wrist could allow more efficient lifting but poses a risk of increased strain, injury, and potentially hindered fine motor control. Pregnant women experience back strain due to a shifted center of gravity caused by pregnancy.
Step-by-step explanation:
Advantages and Disadvantages of Bicep Attachment Points
Suppose the biceps muscle was attached through tendons to the upper arm close to the elbow and the forearm near the wrist. One advantage of this type of construction could be an increased lever arm which allows for more efficient movement, potentially making it easier to lift objects. However, a significant disadvantage would be the increased potential for strain and injury, as the muscle would need to exert a greater force over a longer distance, putting more stress on the tendons and muscle itself. Moreover, an attachment near the wrist might limit the range of motion and make fine motor control more difficult, which can affect daily activities that require precise hand movements.
Back Strain in Pregnant Women
One reason why pregnant women often suffer from back strain late in their pregnancy is the change in their center of gravity due to the growing baby. This shift in weight distribution can place additional strain on the back muscles and spine, leading to discomfort and pain.