Human Body Bones

Question 1

Is our teeth a bone?

Answer 1

Our teeth form part of the skeletal system, but are not counted as bones.

Question 2

How heavy is Bone marrow?

Answer 2

Bone marrow makes up 4% of a human body mass. It produces red blood cells which carry oxygen all over the body. Marrow is also produces lymphocytes, key components of the lymphatic system, which support the body’s immune system.

Question 3

What are some Skeletal disorders?

Answer 3

There are a number of skeletal disorders, osteoporosis is a bone disease that increases the chance of fractures, scoliosis is a curvature of the spine, while arthritis is an inflammatory disease that damages joints.

Question 4

What is the medical branch in which they study the human skeleton?

Answer 4

The medical branch of learning about the human skeletal system is called Orthopedics.

Question 5

Where is the area of the body where the most bones are?

Answer 5

The area of our body with the most bones is the hand, fingers and wrist where there are 54 bones.

Question 6

What is the longest bone in the human body?

Answer 6

The longest bone in the human body is the thigh bone called the femur.

Question 7

What are the functions of the skeletal system?

Answer 7

The human skeletal system has six major functions including the production of blood cells, for support, for movement, for protection, for storage of ions and endocrine regulation.

Question 8

How many bones are in your hands and feet?

Answer 8

Each hand has 27 bones, and each foot has 26, which means that together the body’s two hands and two feet have 106 bones. That is, the hands and feet contain more than half of the bones in your entire body.

Question 9

How many ribs does a human adult have?

Answer 9

Most adults have 24 ribs (12 pairs), but about one in every 500 people has an extra rib, called a cervical rib. This rib, which grows from the base of the neck just above the collarbone, is not always fully formed — it’s sometimes just a thin strand of tissue fibers.

Question 10

Are bones the hardest substance in the human body?

Answer 10

Bones are strong and rigid, and built to withstand a lot of force — pound for pound, they are stronger than steel. But, surprisingly, they are not the hardest substance in the body.

Question 11

Do humans move their bones directly?

Answer 11

When people move their arms, legs or any other part of their bodies, it’s not because they tell their bones to move — it’s because they tell their muscles, which are attached to their bones, to move.

Question 12

What bone is the small in the body?

Answer 12

The longest bone in your body, the femur (thighbone), is about 1/4 of your height. The smallest is the stapes (or stirrup) in the ear, which is about 1/10 of an inch.

Question 13

Humans and one other animal have the same amount if bones in their neck?

Answer 13

Humans and giraffes have the same number of bones in their necks.

Question 14

How many times faster does fingernails grow than toenails?

Answer 14

Fingernails grow nearly 4 times faster than toenails!

Question 15

How many bones does the human face have?

Answer 15

The human face has 14 bones.

Question 16

When do our bones stop growing?

Answer 16

Human bones grow continually from birth till our mid 20’s. Our skeleton’s bone mass is at its maximum density around the age of 30.

Question 17

How many bones are in a human skeleton?

Answer 17

It is composed of 270 bones at birth – this total decreases to 206 bones by adulthood.

Question 18

What are the three main classifications joints?

Answer 18

Fibrous (synarthrodial): This type of joint is held together by only a ligament. Examples are where the teeth are held to their bony sockets and at both the radioulnar and tibiofibular joints.

Cartillagenous (synchondroses and sympheses): These joints occur where the connection between the articulating bones is made up of cartilage for example between vertebrae in the spine.

Synovial joints are by far the most common classification of joint within the human body.
There are 6 types of synovial joints which are classified by the shape of the joint and the movement available.

Question 19

Where does the deoxygenated blood from the body come into the heart?

Answer 19

It is located in the upper right corner of the heart superior to the right ventricle. Deoxygenated blood entering the heart through veins from the tissues of the body first enters the heart through the right atrium before being pumped into the right ventricle.

Question 20

where does the blood flow after the right ventricle?

Answer 20

As deoxygenated blood flows into the right atrium, it passes through the tricuspid valve and into the right ventricle, which pumps the blood up through the pulmonary valve and through the pulmonary artery to the lungs.

Question 21

What artery takes it to the lungs to get oxygenated?

Answer 21

The bronchial artery supply the lungs with oxygenated blood and nutrition. Although there is much variation, there are usually two bronchial arteries that run to the left and one to the right lung.