Question

What is the term used for the opening or hole in a bone?
A. Process
B. Fossa
C. Foramen
D. Tubercle

Answer 1

An opening or hole in a bone allows nerves and blood vessels to travel from one side of the tissue to the other. These holes are primarily present in the skull. They are also found in the vertebrae, long bones, heart, abdomen and teeth. The number, size and shape of these holes varies between individuals. In plants such an opening or hole is present in the female reproductive part (the ovule) and is called a micropyle.

Complete answer:
Option A Process: A process is defined as a series of actions or steps taken in order to achieve a desirable end. An opening or hole in a bone is not called a process.
Option A is incorrect.
Option B Fossa: The term Fossa means a shallow depression or hollow. However, a hole in a bone is not called a Fossa.
Option B is incorrect.
Option C Foramen: A foramen or foramina is an opening or hole through tissues, usually bone. The foramen allows nerves and blood vessels to travel from one side of the tissue to the other.
Option C is correct.
Option D Tubercle: A tubercle is defined as a small rounded protuberance or projection, usually on a bone or on the surface of an animal or plant. This option is not correct.
Option D is incorrect.

Hence option C. Foramen is the correct answer.

Note:
Most of the foramina are found in the cranial bones and facial bones. Not all skull foramina are present in every individual. In cranium, foramen is present in frontal bone, temporal bone, occipital bone, sphenoid bone, ethmoid bone, nasal bone etc. The spinal foramen is of three types namely vertebral, intervertebral and transverse. Temporary foramen is present in babies in their placenta. When they are born this hole closes.