The nose is made of cartilage, which is a strong elastic connective tissue that is more flexible than bones.
Q: What is the backbone or vertebral column?
The backbone or vertebral column is a long flexible column of bones extending from the neck to the end of the back.
Q: How many vertebrae are humans born with?
Humans are born with 33 vertebrae: 24 presacral vertebrae (7 cervical, 12 thoracic, and 5 lumbar) followed by the sacrum (5 fused sacral vertebrae) and the coccyx (4 frequently fused coccygeal vertebrae).
Q: How many separate vertebrae does an adult spine have?
An adult spine has 24 separate vertebrae due to the fusion of certain vertebrae with the development of the body.
Q: What is the purpose of the discs of cartilage between each pair of vertebrae?
The discs of cartilage between each pair of vertebrae cushion the bones during movement.
Q: What are the top two vertebrae called and what is their function?
The top two vertebrae are called the atlas and the axis. The atlas rotates around a stout vertical peg on the axis, allowing the skull to move freely up and down, and from side to side.
Q: What do the ribs do?
The ribs enclose and protect the chest cavity, where organs such as the heart and lungs are located.
Q: How many paired rib bones make up the human rib cage?
The human rib cage is made up of 12 paired rib bones.
Q: What is the function of the ribcage in the body’s respiratory system?
The ribcage helps in expansion of the chest cavity so that the lungs can expand and breathe in oxygen.
Q: What are the bones that make up the forelimb?
The bones of the forelimb include the upper arm, forearm, and hand.
Q: What is the largest bone in the body?
The femur is the largest bone in the body.
Q: What is the function of the leg?
The leg gives support to the body when we are standing and helps us to do other movements such as walking, running, and jumping.
Q: What are skeletal muscles and how do they work in pairs?
Skeletal muscles are voluntary muscles that are attached either directly or indirectly to the bones and can be consciously controlled by the body. They work in opposing pairs, where one muscle in the pair contracts while the other relaxes to produce movement.
Q: What are smooth muscles and where are they found in the body?
Smooth muscles are involuntary muscles that are found in the internal body organs, such as the digestive system and blood vessels. They work automatically to perform functions like forcing food through the intestines.
Q: What are cardiac muscles and where are they found in the body?
Cardiac muscles are involuntary muscles that are found only in the heart. They are responsible for pumping blood throughout the body.
Q: How many muscles does it take to frown and smile?
It takes 43 muscles to frown and only 17 muscles to smile.
