Final answer:
True, bruises can occur in young infants as they become more mobile and are prone to minor bumps and falls. This bruising is a typical part of growing up but should be monitored for excessiveness. It's also true that babies' bones are mostly cartilage at birth and that a bone fracture is the same as a broken bone.
Step-by-step explanation:
Answering the statement 'Bruises are common in young infants', it is important to clarify that true, bruises can occasionally occur in young infants, especially as they become more mobile and begin to explore their environment. However, excessive bruising or bruising in non-mobile infants can be a cause for concern and should be evaluated by a healthcare professional. Bruising happens when small blood vessels under the skin break, leading to discoloration. As infants start crawling, standing, and taking their first steps, they are prone to minor bumps and falls that can cause bruising.
Regarding the reference information, let's answer some of the provided statements:
- Most bones are made entirely of cartilage at birth. - This is true. Babies are born with a high proportion of cartilage in their skeletons, which gradually ossifies into bone as they grow.
- A broken bone is the same as a bone fracture. - This is also true. The term 'bone fracture' is a medical term for a broken bone, and they mean the same thing.