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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
What is the weakest part of the femur?
The weakest bone in your body would be the spine or spinal cord. or your nose
Add 2.
You probably mean weakest because of its sheer smallness. Or maybe you mean weakest because it's made of something weaker. The bones within the ear are probably the weakest because they are the smallest and you could break them very easily between your fingers. Re the answer above, I doubt if the spine is the weakest and the spinal cord is not a bone anyway. You might break your spine, but that would probably be because one vertebra has come away from another vertebra, not because the bone has broken.
add 3. Possibly the Hyoid bone in the throat is among the weaker, as it may be broken just by finger or thumb pressure. But as in A2, the Stapes in the ear is very delicate, but very well protected. Both of these bone (groups) are disconnected from other bones of the body.
Which bone or bones make up the cheekbones?
The zygomatic arch is the bone name for the cheekbone. The arch is made up of the zygomatic process of the temporal bone and the temporal process of the zygomatic bone.
What tissue forms supporting rings of respiratory passages?
Ciliated and pseudostratified columnar epithelial cells plus goblet cells for the secretion of mucin.
How many bones in a newly born infant?
I believe 380 or 308 but! They are mostly made of cartilage as they grow the cartilage hardens and turns into bones also the number decreases thus having 206 bones in a average body. Also when you are a new born the skull is open and then fuses togehter that explains the squiggly lines on your skull...
Is the spine projection or depression?
A meatus is an opening; therefor, it's a depression, not a projection.
What are the round bones of the body?
The round bones of the body include the patella (kneecap) and the talus (ankle bone). These bones are classified as round due to their circular or oval shape.
What bone cells in the body remodel the synthetic material and produce new bone?
Osteoclasts are the bone cells responsible for breaking down and resorbing old bone tissue. Osteoblasts, on the other hand, are responsible for producing new bone tissue and laying down the synthetic material. Both cell types work together in a process known as bone remodeling.
What is an avulsion lateral malleolus?
the lateral malleolus is the bony prominence on the outside of your ankle. it is commonly referred to as the ankle. an avulsion to this structure is when part of it is forceably broken away from the maleolus.
What are the two locations on a thoracic vertebra where the ribs articulate?
The two locations on a thoracic vertebra where the ribs articulate are the costal facets on the sides of the vertebral body and the transverse costal facets on the transverse processes. These articulations form the joints that connect the ribs to the thoracic vertebrae.
Why does the skull have joints?
The sutures of the skull have several important roles. In development they are straight edged and lie on top of a network of soft cartilage and connective tissue to allow the head of the newborn to deform in order to fit through the narrow birth canal.
In adult life the main function of sutures is to distribute impact force evenly around the skull. The collagen present in the interfacial layer coupled with the jagged interlocking distribute impact force evenly across the entire length of the sutures and connecting bone. They are around 5 times stronger under impact than pure bone and as the collagen content goes up with increased interdigitation they can be stronger.
Under slow compression only extremely interdigitated suture can match the strength of pure cranial bone.
Sources:
HUBBARD, R. P. 1971. FLEXURE OF LAYERED CRANIAL BONE. Journal of Biomechanics,4, 251-&.
HUBBARD, R. P., MELVIN, J. W. & BARODAWA.IT 1971. FLEXURE OF CRANIAL SUTURES. Journal of Biomechanics, 4,491-&.
JASLOW, C. R. 1990. MECHANICAL-PROPERTIES OF CRANIAL SUTURES. Journal of Biomechanics,23, 313-321.
SADLER, T. W. 2010. Systems-Based Embryology. In: HORVARTH, K. (ed.) Langman's Medical Embryology. 11 ed. Philadelphia: Lippincott Williams & Wilkins.
SCHOENWOLF, G. C., BLEYL, S. B., BRAUER, P. R. & FRANCIS-WEST, P. H. 2009. Origin of Skull. In: CRATER, P. (ed.) Larsen's Human Embryology. 5th ed. Philadelphia: Curchill Livingstone.
Is epithelium tissue found in bones cartilage and fat?
Look through her and you will find that this tissue is found in those places and many more. Depends on what type of epthelial tissue:
Types of epithelial tissue - (type - structure - location - function)
- Simple squamous - one layer of fat cells - lines ventral body cavities, heart and blood vessels, and portions of the kidney tubules (thin sections of loop of Henle), inner lining of the cornea, and exchange surfaces of the lungs (alveoli) - permits difusion of gases, reduces friction, controls vessel permeability, and performs absorption and secretion
- Simple cuboidal - one layer of cube-shaped cells - found in glands, ducts, portions of kidney tubules - provides limited protection, secretion of hormones, and / or absorption
- Simple columnar - one layer of column-shaped cells - line the stomach, intestine, gallbladder, uterine tubes, and collecting ducts of kidneys - protection, secretion of gastric juices and enzymes, and absorption of digestive end products (if microvilli present)
- Pseudostratified columnar - line the nasal cavity, bronchi, and trachea - provides protection and secretion
- Ciliated - one layer of columnar cells with cilia on their free surfaces - lines trachea and fallopian tubes - sweeps mucus and dust to the pharynx and sweeps ovum toward uterus.
- Transitional - many layers of cells, but surface cells change from rounded to flat - line the urinary bladder, renal pelvis, and ureters - permits expansion and recoils after stretching
- Stratified squamous - many layers of cells (surface -- flat, lower cells -- rounded, lower layer undergoes mitosis) - located on the skin surface and line the mouth, throat, esophagus, rectum, anus, and vagina - provides physical protection against abrasion, pathogens, and chemical attack. Surface cells of epidermis are dead providing a barrier to pathogens while interior cells are living and also provide a barrier for pathogens.
What bones are inferior to your pelvis?
Tracing down the spine the pelvis leads to the coccyx, aka the tailbone, though the femurs of your legs also extend past the bottom of your pelvis.
The pelvis itself is made of the sacrum (back) and os coxa (sides) (and some people include the coccyx.)
How many bones are in are in are body?
The human body typically has 206 bones. This number can vary slightly from person to person due to the presence of additional small bones or fusion of certain bones.
How does long bone resist breaking when stress?
Long bones resist breaking under stress due to their cylindrical shape, which helps distribute forces evenly across the bone. Additionally, long bones are made up of hard outer compact bone that provides strength and support, while the inner spongy bone helps absorb and dissipate energy to prevent fractures. Finally, the bone is reinforced by a network of collagen fibers that add flexibility and resistance to bending or snapping.
What is the common name for the epiphysis?
The common name for the epiphysis is the growth plate. During a growing young adult or child, this is the location from which long bone growth occurs.
What bone in the human body sounds like a funny bone but really is not?
The funny bone is not actually a bone, but a nerve called the ulnar nerve that runs along the humerus bone in the elbow. When this nerve is bumped or compressed, it can cause a sensation of tingling or discomfort, often referred to as hitting your "funny bone."
A subluxated knee occurs when the kneecap partially dislocates from its normal position in the knee joint. This can cause pain, instability, and difficulty moving the knee. Treatment may include rest, physical therapy, or in severe cases, surgery.
Is the ulna a short bone or a flat bone?
The ulna articulates with:
- the humerus at its proximal end (end closest to the elbow)
- the radius at its radial notch (near the top part of the ulna) and at the ulnar notch (near the bottom part of the ulna)
- the wrist (separated by a fibrocartilaginous disc) at its distal end (end closest to the hand)
What is a fibrous protein that forms the matrix of your skin ligaments tendons and bones?
Collagen is the fibrous protein that forms the matrix of skin, ligaments, tendons, and bones. It provides structural support and strength to these tissues.
What does a black string around your wrists mean?
It is called a 'Kashi string', that normally should be obtained from the Vishwanath temple in kashi in Benares in India. It is basically a thread that has been run through the mantras utterred by brahmins who worship the Kala Bhairava diety of Kashi. Kala Bhairava is a believer of morality, good values and an upholder of truth & justice, but unfortunately is of a devilish appearance. Due to this, he is known to scare evil people and evil spirits. As such, he is worshipped and the string that has been blessed in his presence is worn by millions of people to shun & keep evil spirits and voodoo away.
Do you get a cast for a broken collar bone?
Yes, a broken collarbone is typically treated with a sling or brace to immobilize the arm and shoulder. In some cases, surgery may be needed to realign the bone fragments. It is rare for a cast to be used specifically for a broken collarbone as the collarbone is a mobile bone.
No, bones themselves cannot bruise as they do not have blood vessels. However, surrounding soft tissues such as muscles and ligaments can become bruised during an injury where the bone may also be affected.
diaphysis
No. The epiphysis is the growing part of a bone
The epiphysis is at the end of the bones and the diaphysis is the shaft of the long bone. The diaphysis is the answer to your question.
Which hip bone has tuberosities that you sit on?
The ischium is the bone in the pelvis that has tuberosities that you sit on.
