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Skeletal System

The skeletal system provides definite shape and mechanical support to the body, and it also helps in movement and locomotion. Ask questions about the skeletal system and bones here.

14,490 Questions

Why do you think the foramen magnum is positioned near the rear of the cranium for knuckle-walking species and near the center of the cranium for bipedal species?

It is positioned there to keep the skull in line with the posture of the vertebrae, which comes in at an angle to the skull in knuckle walkers. That is in contrast with humans in which the foramen magnum is positioned under the skull, which aligns with vertical posture of humans.

How does that substance inside the bone look?

An outer layer of Cortical Bone surrounds a spongy bone centre. The pockets within the sponge are filled with Bone Marrow.

The inner bone looks like thick sponge filled with slime

What is stronger concrete or Mortar?

  • Concrete is stronger than mortar.
  • Because mortar is a mixture of cement, sand and water but concrete is a mixture of cement, sand, gravel and water. Thus concrete forms a stiff mix than mortar.
  • Hence the concrete is more stronger than cement.

Is your cartilage supposed to swell?

If it's recently been pierced, then yes. Any piercing is likely to swell.

What are sphenoid sinusitis?

The sinuses are paired air pockets located within the bones of the face. They are: the sphenoid sinuses; Located just behind the ethmoid sinuses, and behind the eyes.

Why is a small receding jaw helpful to a baby?

Well im not really sure. but i know that a small receding jaw line accurs to all newborns to make it easier to feed. but it is also very bad. try researching about "Small, Receding Jaw Lines In babys" & it will give more information. but it does not really say how it helps.

Hopee thaat helps you a little.

GOOD LUCK :)

Do bones excrete?

yes they do by using calccium

I found a bone and I was wondering where I could get it tested. I want to know what it's from?

One of the best ways to do this at no cost would be to visit a nearby college or university with a biology department. There is a good chance you would not even need to perform any chemical tests. A biologist might be able to identify the bone simply by looking at it.

Why do humans need ribs?

To protect the internal organs (such as the hearth and lungs) from damage.

Why is the costal region called the costal region?

The coast, otherwise called the coastline or beach, is characterized as the space where land meets the ocean,[1] or as a line that frames the limit between the land and the sea or a lake.[2] The Earth has around 620,000 kilometers (390,000 mi) of coastline. Coasts are significant zones in regular biological systems, frequently home to a wide scope of biodiversity. Ashore, they harbor significant biological systems like freshwater or estuarine wetlands, which are significant for bird populaces and other earthly creatures.

What is an example of ellipsoid joint?

The joint between radius and scaphoid + lunate should fall into the category of an ellipsoid joint.

Would a baby have more bone or more cartilidge?

babies have more cartilage because at first babies are all cartilage their bones harden over time

Who makes a minivan with lumbar passenger?

As of my last update, Chrysler is known for offering minivans with lumbar support for the passenger seat, particularly in their Pacifica model. This feature is designed to enhance comfort during long drives. Other manufacturers may also provide similar options, but Chrysler has been a notable player in this category. Always check the latest specifications and features, as they can change with new model years.

How do you find the radius in millimeters?

Convert the circumference into milimeters and divide by pi (~3.14159)

Where does the thoracic cavity start and end?

Your thoracic cavity starts from the upper margin of the thoracic vertebra to upper margin of the manubrium of the sternum. There is your diaphragm on the lower side.

How do you do little jingles in knuckle bones?

To create little jingles in knuckle bones, you typically use small, smooth objects like pebbles or metal pieces that can fit inside the knuckle bones. Hold a set of knuckle bones in one hand, and with the other hand, shake or tap them together to create a rhythmic sound. You can also experiment with different movements and patterns to vary the jingles. The key is to maintain a steady rhythm while ensuring the contents move freely within the bones.