Infant bones are very soft and pliable because of
A. cartilage formation throughout the body.
B. fluid accumulation between collagenous fibers.
C. mineral deposition in select areas of the body.
D. incomplete ossification at birth.
Can anyone tell me the right answer?
A would be my answer
I agree.
The loss of heart muscle tissue is detrimental because the tissue
A. grows too rapidly.
B. heals very slowly.
C. builds up in the heart.
D. doesn't repair itself.
My answer is D
Congratulations, A is the correct answer! Infant bones are indeed very soft and pliable because of cartilage formation throughout the body.
If you are wondering how to arrive at the correct answer, here's the breakdown:
A. Cartilage formation throughout the body: Cartilage is a flexible connective tissue that serves as a precursor to bone formation. In infants, the skeleton is primarily made up of cartilage, which gradually ossifies (turns into bone) as the child grows. This process starts during prenatal development but is still incomplete at birth, leading to softer, more pliable bones in infants.
B. Fluid accumulation between collagenous fibers: While there is some fluid (such as synovial fluid) present in joints and around collagen fibers, it does not significantly contribute to the softness and pliability of infant bones.
C. Mineral deposition in select areas of the body: Although mineral deposition (such as calcium) is important for bone strength and rigidity, it is not the main factor responsible for the softness and pliability of infant bones.
D. Incomplete ossification at birth: This option is directly related to the correct answer. The incomplete ossification at birth is caused by the ongoing process of cartilage converting into bone.
Therefore, the correct answer is A. Cartilage formation throughout the body.