Neural Control and Coordination: Class 11 Biology Q&A
3 free answers on Neural Control and Coordination (Biology) for Class 11 students, across CBSE, ICSE and State boards. Includes questions such as “What is the role of the brain in reflex action?”, “What happens at the synapse between two neurons?”, “Give the examples of some involuntary movements.”
Question & Answer
Questions
- BiologyClass 11All
What is the role of the brain in reflex action?
The brain plays a crucial role in reflex actions by coordinating and regulating these rapid, involuntary responses to external stimuli. Reflex actions are protective mechanisms that help an organism react quickly to potentially harmful or dangerous situations without requiring conscious thought or decision-making. Here's how the brain is involved in the process: Sensory Input: Reflex actions begin with the detection of a stimulus by sensory receptors in the body, such
- BiologyClass 11All
What happens at the synapse between two neurons?
At the synapse, which is the junction between two neurons (nerve cells) or between a neuron and a target cell (such as a muscle or gland cell), communication occurs through a process called synaptic transmission. The synapse is a crucial site for the transmission of signals in the nervous system. Here's a general overview of what happens at the synapse: Presynaptic Neuron: The neuron that sends the signal is called the presynaptic neuron. It has an a
- BiologyClass 11All
Give the examples of some involuntary movements.
Involuntary movements are actions controlled by the autonomic nervous system that occur without conscious thought or deliberate control. Common examples include the beating of your heart (cardiac muscle contractions), the rhythmic contractions of the digestive tract that move food along (peristalsis), breathing during sleep, blinking to keep eyes moist, blood vessel constriction or dilation to regulate blood pressure and body temperature, and the constant adjustments your pupils make to contr