Sarcolemma is absent in ……….. Muscle fibres

Options

A. skeletal
B. smooth
C. cardiac
D. both (2) and (3)

Answer

To answer the question "Sarcolemma is absent in ……….. Muscle fibers," we can follow these steps:

### Step 1: Understand the term "Sarcolemma"
- The term "sarcolemma" is derived from two parts: "sarco," which means muscle, and "lemma," which means membrane. Therefore, sarcolemma refers to the plasma membrane of muscle fibers.

### Step 2: Identify where Sarcolemma is present
- Sarcolemma is primarily associated with striated muscle fibers, which include skeletal muscle fibers. It acts as a protective layer and plays a role in the contraction of these muscles.

### Step 3: Determine the type of muscle fibers where Sarcolemma is absent
- Sarcolemma is not present in smooth muscle fibers. Smooth muscle fibers do not have the same structure as striated muscle fibers and therefore do not possess a sarcolemma.

### Step 4: Conclude the answer
- Based on the understanding that sarcolemma is associated with striated muscle fibers and is absent in smooth muscle fibers, we can conclude that the answer to the question is **smooth muscle fibers**.

### Final Answer:
Sarcolemma is absent in **smooth muscle fibers**.

---