Unit 12: Coordination and Control

What is Coordination and Control?

Coordination and Control is a pivotal chapter in Biology that explores how organisms regulate and integrate various physiological processes to maintain internal balance and respond to external stimuli. This unit covers the mechanisms of communication within organisms, including the nervous and endocrine systems, and examines how these systems work together to coordinate bodily functions and maintain homeostasis. Students will learn about the role of neurotransmitters, hormones, and sensory organs in controlling and coordinating responses.

Key Topics in Coordination and Control:

• Nervous System: Understanding the structure and function of the nervous system, including neurons, synapses, and the central and peripheral nervous systems.
• Endocrine System: Exploring the role of hormones and glands in regulating physiological processes and coordinating bodily functions.
• Sensory Organs: Examining how sensory organs detect and process environmental stimuli to produce appropriate responses.
• Neurotransmission: Learning about the transmission of nerve impulses and the role of neurotransmitters in communication between neurons.
• Homeostatic Regulation: Investigating how the nervous and endocrine systems work together to maintain internal balance and respond to changes.
• Reflexes and Responses: Understanding the mechanisms of reflex actions and voluntary responses to stimuli.

Benefits of Studying Coordination and Control:

• Foundation for Physiology: Provides essential knowledge for understanding how organisms regulate internal processes and respond to environmental changes.
• Insight into Health: Enhances comprehension of how disruptions in coordination and control can lead to disorders and impacts on overall health.
• Scientific Preparedness: Prepares students for advanced studies in biology, medicine, and related fields by mastering concepts of physiological regulation and integration.

This chapter is crucial for students to understand the complex mechanisms of coordination and control in living organisms. Mastering these concepts will contribute significantly to academic success and provide a solid foundation for further studies in biological and health sciences.

1. Processes that carry nerve impulses away from the cell body are called

a. axons
b. dendrites
c. synapses
d. myelin sheath

2. The portion of the nervous system that is involuntary in action

a. somatic nervous system
b. motor nervous system
c. autonomic nervous system
d. sensory nervous system

3. Which neurons are present inside the central nervous system

a. sensory neutrons only
b. motor neutrons only
c. sensory and motor neutrons both
d. Interneurons only

4. The part of brain responsible for muscle movement, interpretation of the senses and the memory is the

a. pons
b. medulla oblongata
c. cerebrum
d. cerebellum

5. Apart from hearing what other major body function is performed by the ear?

a. hormone secretion
b. body balance
c. reduction in nerve pressure
d. all of these

6. The myelin sheath is formed by ….which wrap around the axons of some neurons

a. nodes of ranvier
b. axons
c. dendrites
d. schwann cells

7. This is not the part of hindbrain

a. pons
b. medulla oblongata
c. cerebrum
d. cerebellum

8. If you look at an intact human brain,what you see the most is a large,highly convoluted outer surface.This is the

a. cerebrum
b. cerebellum
c. medulla oblongata
d. pons

9. Insulin and glucagon are produced in the

a. hypothalamus
b. anterior pituitary
c. liver
d. pancreas

10. All of these are harmone except

a. insulin
b. thyroxin
c. glucagon
d. pepsinogen