All are the function of sympathetic nervous system except:-

Options

A. Increase sweat gland secretion
B. Increase lacrimal gland secretion
C. Relax the muscle of urinary bladder
D. Constricts bronchi

Answer

To determine which of the options is not a function of the sympathetic nervous system, we can analyze each option one by one based on our understanding of the sympathetic nervous system's roles.

### Step-by-Step Solution:

1. **Understanding the Sympathetic Nervous System**:
- The sympathetic nervous system is part of the autonomic nervous system (ANS) and is responsible for the 'fight or flight' response. It prepares the body for stressful situations by increasing heart rate, dilating pupils, and redirecting blood flow to essential organs.

2. **Analyzing the Options**:
- **Option 1: Increase sweat gland secretion**:
- The sympathetic nervous system does indeed increase sweat gland secretion. This is part of the body's response to heat or stress.
- **Option 2: Increase lacrimal gland secretion**:
- The sympathetic nervous system can also increase lacrimal gland secretion by enhancing blood flow to the glands.
- **Option 3: Relax the muscle of urinary bladder**:
- The sympathetic nervous system is involved in relaxing the bladder muscles, allowing for urine retention.
- **Option 4: Constricts bronchi**:
- The constriction of bronchi is primarily a function of the parasympathetic nervous system. The sympathetic nervous system actually dilates the bronchi to allow for increased airflow during stress.

3. **Identifying the Correct Answer**:
- Based on the analysis, the option that does not represent a function of the sympathetic nervous system is **"constricts bronchi."** This is a function of the parasympathetic nervous system.

### Final Answer:
The function of the sympathetic nervous system that is not true is: **Constricts bronchi.**