Which of the following is multipennate muscle –
**Core Concept**
The question tests the understanding of muscle anatomy, specifically the arrangement of fibers within a muscle. A **multipennate muscle** has multiple tendons of origin and insertion, with fibers arranged in a feather-like pattern. This arrangement allows for a greater number of fibers to be packed into a given area.
**Why the Correct Answer is Right**
A multipennate muscle, such as the **deltoid muscle**, has a complex architecture that enables it to produce a wide range of movements. The multipennate arrangement allows for a greater number of muscle fibers to be packed into a smaller space, increasing the muscle's overall strength.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not describe a multipennate muscle.
**Option B:** This option is also incorrect as it does not match the description of a multipennate muscle.
**Option C:** This option is incorrect because it is not a multipennate muscle.
**Clinical Pearl / High-Yield Fact**
Remember that the **deltoid muscle** is a classic example of a multipennate muscle, and its unique arrangement allows for a wide range of shoulder movements.
**Correct Answer:** D. Deltoid