Answer:
c. the shoulder joint
Explanation:
The shoulder joint is the most flexible joint in the human body. This joint provides a 360° rotation around a fixed axis unlike most body joints.
- A joint is a place where two or more bones articulates in the body.
- There are numerous types of joints found in the human body.
- The suture joint are highly inflexible and holds the skull in place.
- The shoulder joints are very flexible and helps the arm to rotate freely.
- This joint is formed when the spherical head of the long bone of the arm fits into the socket of the glenoid cavity of the of the shoulder bone to form a ball and socket joint.
Answer:
The correct answer is A. active transport
Explanation:
There are two types of transport which helps in the transport of molecules across the cell membrane. These are active transport and passive transport. In passive transport, the molecules move across the membrane without any energy expenditure and down their concentration gradient.
In active transport, molecules move against their concentration gradient with the help of ATP so in active transport, molecules can be present in high concentration outside or inside the cell.
Sodium is an ion that moves by active transport in and out of the cell with the help of sodium-potassium pump so it's so the correct answer is A.
The addition or removal of heat changes the temperature of an object. The temperature can cool down or it can warm up.
