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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
Choose the directional term the sternum is what to the heart?
above (slightly slightly to the right also)
What part of the skeleton is the eye held in?
The skull contains what we call the eye socket or orbit. There are seven bones that articulate to form the orbit: frontal bone, lacrimal bone, ethmoid bone, zygomatic bone, maxillary bone, palatine bone and the sphenoid bone.
Which cervical vertebrae form the atlantoxial joint?
The atlantoxial joint is formed by the first and second cervical vertebrae, known as the atlas (C1) and axis (C2) respectively. It allows for rotational movement of the head.
Which tissues covers the ends of the bones at the joint?
Hyaline cartilage covers the ends of bones in many joints. It provides a slippery surface to reduce friction during bone movement.
What is the soft tissue at the center of bones known as?
The soft tissue at the center of bones is known as bone marrow. It is responsible for producing blood cells and storing fat.
When should someone start working on bone strength?
You should always be concerned with bone strength. Get the recommended daily allowances of calcium and vitamin D - usually drinking milk is enough! - and exercise regularly. Definitely by middle age, you should really be thinking about it.
What is the name of the part of the human skeleton which protects our brain?
The cranium whish is basicly part of your scull
How does the structure of the bone make them both strong and lightweight?
Bones are made up of a matrix of collagen fibers and calcium crystals, which provide both flexibility and strength. The hollow structure of bones, filled with marrow, also contributes to their lightweight nature. Additionally, the arrangement of compact and spongy bone tissues distributes forces and enhances the bone's ability to withstand compression and tension.
What are examples of slightly movable joints?
Examples of slightly movable joints in the body include the ribs and the joint between the two bones of the lower leg (tibia and fibula). These joints allow for limited movement, such as expansion of the ribcage during breathing and small movements between the two bones of the lower leg.
Is obtaining oxygen part of the function of a skeleton?
No, obtaining oxygen is not a function of the skeleton. The skeleton provides support, protection for internal organs, assists in movement, and serves as a storehouse for minerals. Oxygen is obtained and distributed through the respiratory and circulatory systems.
What is the fluid called that lubricates freely moving joints in the human body?
In our joint cavities, there is a fluid known as synovial fluid. It allows the joints to move freely and serves to reduce friction that can occur when joints move together. It is made up of hyaluronic acid.
Where in the body will you find ball and socket joints?
The shoulder and hip joints are the only ball-and-socket joints in the human body due to the need for great motion at the end of the body’s limbs and the vast numbers of muscles needed to move and support such flexible joints. In the shoulder joint, the spherical head of the humerus (upper arm bone) fits into the glenoid cavity of the scapula (shoulder blade). The glenoid cavity permits the shoulder joint the greatest range of motion in the human body. The muscles of the rotator cuff hold the humerus in place.The hip joint is somewhat less moveable than the shoulder, but is an overall stronger and more stable joint. That is necessary to bear the weight of the body resting on the legs while performing actions such as standing, walking, and running. In the hip joint the rounded, almost spherical head of the femur (thigh bone) fits tightly into the acetabulum, a deep socket in the os coxa (hip bone). The largest muscle in the body is found here: the gluteus maximus. Many tough ligaments and the powerful hip muscles hold the head of the femur in place and resist some of the most powerful strains in the body. The depth of the acetabulum also prevents dislocations of the hip by limiting the movement of the femur in its socket.
What would happen if there were no tendons attached to your bones?
Without tendons, you wouldn't be able to move your bones effectively. Tendons are crucial in connecting muscles to bones and transferring the force generated by the muscles. Without tendons, your muscles wouldn't be able to move your bones, leading to immobility and loss of function.
What bones protects certain internal organs of the body?
The skeleton protects internal organs.
Head
The skull protects the brain.
Spine
The spinal vertebral bodies protect the spinal cord.
Chest
The clavicle on each side helps protect the neck, major arteries, the lungs, and helps give structure and support for the ribs.
The sternum down the front of the chest protects the heart.
The ribcage protects the heart, lungs, the diaphragm, the liver, spleen, pancreas, and gallbladder, and to a lesser extent the kidneys.
Pelvis
The pelvic bone gives structure and with the spine and hip bones protects the ureters leading from the kidneys to the bladder and protects the bladder also. It protects arteries on both sides of the groin/upper thigh. In females, it protects the uterus, fallopian tubes and ovaries.
Legs / arms
The thigh bone in part protects the femoral artery running from the groin to the popliteal artery behind the knee. The bone also gives structure for muscles, ligaments, etc. that allow movement, just like in the arms. The upper arm protects the brachial artery and radial artery.
The major arteries are vital for continued life.
The major organs include: the brain, heart, lungs, kidneys, liver, and to a lesser extent, the spleen. But if the spleen is injured, the person can bleed to death.
How many bones do we have in our fingers?
The fingers (and toes) in anatomy are called digits. The visible parts are made up of three bones called phalanges (aside from the thumbs). The Distal Phalanx is the one in the tip of the finger, the Middle Phalanx is the one in the middle of the finger and the Proximal Phalanx is in the base of the finger. There is also another bone in each digit but is hidden the body of the Hand. These are called the Metacarpal bones and are long thin bones. These are not part of the digits.
To answer this directly: the number of bones in each finger is three except the thumb which has two. The same with the toes. The large toe has two and the others have three.
How does a snail protect and support themselves with no skeleton in their bodies?
Snails protect themselves by carrying a hard shell on their backs, which serves as a form of armor. They also produce a slimy mucus that helps to keep their bodies moist and protected from dehydration. In addition, snails have a muscular foot that allows them to cling to surfaces and retreat into their shells for protection.
Which would be homologous structure to a human arm bone?
A homologous structure to a human arm bone would be the forelimb bones in other mammals, such as the forelimb bones in a bat or a whale. These structures may have different functions (e.g. for flying or swimming), but they share a common evolutionary origin with the human arm bones.
What is a bone like substance that has 9 letters?
Calcium phosphate is a bone-like substance that has 9 letters.
What would happen if humans didn't have a backbone?
If we did not have a spine, we would be floppy and if you sat down, you would look like liquid. But you need a spine to live.
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Though, some 'persons' could be considered as quite 'spineless' (characteristically not anatomically).
WHAT IS CARTILAGINOUS TIP OF THE STERNUM?
The cartilaginous tip of the sternum is also known as the xiphoid process. It is a small, cartilaginous extension at the bottom of the sternum and serves as an attachment point for some abdominal muscles. The xiphoid process can vary in shape and size among individuals.
What are the anatomical names for the hand bones?
The anatomical names for the hand bones are the metacarpals (palm), proximal phalanges (closest to the hand), middle phalanges, and distal phalanges (tip of the fingers).
Where do bones allow movement to happen?
- Bones move by your muscles
- Bones have joints that let them move back and forth, muscles help them move, and you need energy to move your body like healthy How_do_your_bones_move.
