Q. Why do you think the bones of the lower limbs are thicker than the bones of the upper limbs?
The bones of the lower limbs are thicker and stronger than the bones of the upper limbs because of the need to support the entire weight of the body and the resulting forces from locomotion.
Q. Why are the bones of the lower limb larger and stronger than those of the upper limb?
The lower limb is designed for weight-bearing, balance, and mobility. The bones and muscles of the lower limb are larger and stronger than those of the upper limb, which is necessary for the functions of weight-bearing and balance. Our lower limbs carry us, allow us to push forward, and also keep us standing still.
Q. Why is it generally no problem for the arm to clear the widest dimension of the thoracic cage?
Why is it generally no problem for the arm to clear the widest dimension of the thoracic cage? It is a slender, lightweight bone that with- stands trauma poorly. The humerus is a bone; the radius and ulna are bones. 8.
Q. Why does a person instinctively curls over?
A person instinctively curls over his abdominal area in times of danger. Why? To prevent a smaller target and also to protect the internal organs and genitalia. What is the total number of phalanges in the hand?
Q. What is the rough projection that supports body weight when sitting?
The posterolateral portion of the hip bone is the ischium. It has the expanded ischial tuberosity, which supports body weight when sitting. The ischial ramus projects anteriorly and superiorly.
Q. What bone receives the weight of the body when sitting?
Ch. 7 skeleton
| Question | Answer |
|---|---|
| Receives the weight of the body when sitting | Ischial tuberosity |
| Point where the coxal bones join anteriorly | Pubic symphysis |
| Upper margin of iliac bones | Iliac crest |
| Deep socket in the coxal bone that receives the head of the femur | Acetabulum |
Q. What is the longest and strongest bone in the human body?
The femur is one of the most well-described bones of the human skeleton in fields ranging from clinical anatomy to forensic medicine. Because it is the longest and strongest bone in the human body, and thus, one of the most well-preserved in skeletal remains, it makes the greatest contribution to archaeology.
Q. Do teeth ever heal themselves?
Each tooth’s stem cells produce new dentin, in an attempt to repair the damage. However, this innate repair mechanism has its limits and can only manufacture small amounts of tissue while combating a cavity, injury, or infection. This is why, under normal circumstances, teeth cannot heal themselves.
Q. Is it normal to have tiny holes in teeth?
Dental cavities, or caries, are tiny holes in the hard surface of the teeth. They are caused by bacteria on the surface of teeth creating acid out of sugar. The most common culprit is a bacterium known as Streptococcus mutans. The bacteria form a sticky film known as plaque.
Q. How can I regrow my teeth naturally?
Demineralization and remineralization are interrelated and in constant flux.
- Brush your teeth.
- Use fluoride toothpaste.
- Cut out sugar.
- Chew sugarless gum.
- Consume fruit and fruit juices in moderation.
- Get more calcium and vitamins.
- Decrease dairy product consumption.
- Consider probiotics.
Q. What age teeth stop growing?
Slowly, the permanent teeth grow in and take the place of the primary teeth. By about age 12 or 13, most kids have lost all of their baby teeth and have a full set of permanent teeth. There are 32 permanent teeth in all — 12 more than the original set of baby teeth.
Q. Can you grow teeth back?
All of your life, your dentists, parents and others have been telling you how important it is to take good care of your teeth. Once you lose your enamel or once deep decay sets in, you need fillings and other treatments to reverse decay and restore the teeth. There’s no way to regrow teeth.
