Asked by Victoria Cowart on Jul 22, 2024
Verified
The knee-jerk reflex is controlled by interneurons in the
A) hypothalamus.
B) spinal cord.
C) endocrine system.
D) sympathetic nervous system.
Knee-Jerk Reflex
The knee-jerk reflex is a sudden kicking movement of the lower leg in response to a sharp tap on the patellar tendon.
Interneurons
A type of neuron that transmits impulses between other neurons, especially as part of a reflex arc.
Sympathetic Nervous System
A part of the autonomic nervous system that prepares the body for action by increasing heart rate, blood pressure, and energy production.
- Describe the process and significance of reflex actions.
Verified Answer
AH
Airrick HernandezJul 24, 2024
Final Answer :
B
Explanation :
The knee-jerk reflex is a simple spinal reflex that does not involve the brain. It is controlled by interneurons in the spinal cord, which quickly send a signal to contract the quadriceps muscle in response to a tap on the patellar tendon. The hypothalamus, endocrine system, and sympathetic nervous system are not directly involved in this reflex.
Learning Objectives
- Describe the process and significance of reflex actions.