AP State Board Syllabus AP SSC 10th Class Biology Solutions Chapter 5 Coordination – The Linking System Textbook Questions and Answers.
AP State Syllabus SSC 10th Class Biology Solutions 5th Lesson Coordination – The Linking System
10th Class Biology 5th Lesson Coordination – The Linking System Textbook Questions and Answers
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Fill In the missing sections In the following flow-chart.
Do you think body’s team work maintains functioning of our body? Justify your answer with an example.
- Yes. Body’s team work maintains functioning of our body.
- All our functions are carried out by an effort of several systems working together.
- The human body has a set of systems which regulate the internal environment and strive to give our cells the necessary condition as they need to function.
- We cannot use only the skeletal system or muscular system.
- To do any function several other systems also have their own roles to play.
- The pathway involving the way that our organs tissues and cells pickup signals from their surroundings and respond to them that triggers different functions in our body as well as by our body.
- When all the organs and organ systems work as a unit then the organism will survive.
- For example our eyes, ears, legs should coordinate with each other when crossing the road. Otherwise we may met with an accident.
Give an example of coordination in your body where both hormonal and nervous controls function together.
- Several functions in our body are controlled by nerves, while many others are controlled by hormones.
- When we are afraid, the rate of heart beat increases, the breath rate will be faster, blood pressure increases, the hair on the body becomes errect and we get goose bumps.
- We might not observe our pupil dilation, skin becomes more sensitive. We come to normally only after we reach a safe spot.
- The various actions of the body are controlled by hormones and coordinated by nervous system.
- In these type of conditions nervous system and endocrine system work together to bring about control and coordination.
- Another example for nervous and hormonal coordination. When the mother feeds the baby, the baby sucks the nipple for milk. This information is send to the brain by sensory nerve. Brain orders the pituitary gland to release the hormone oxytocin. Oxytocin helps in the ejection of milk from the mammary glands.
Consider that you are passing by a garbage disposal area and you immediately
cover your nose. Arrange the events below in a logical order by marking them from 1 to 5 to trace the events that happen in the nervous system from detection of foul smell (stimulus generation) to covering your nose (response).
i) At the end of the axon, electrical impulse releases chemicals.
ii) Stimulus received by the dendrites of a neuron sets off chemical reaction that creates an electrical impulse.
iii) Electrical impulse transmitted through cell body and axon.
iv) The chemicals cross the synapse and reach the next neuron. Similarly, the electrical impulse crosses several neurons.
v) Finally, the impulse is delivered from neuron to the gland that helps in recognition of the foul smell and muscle cells that help in covering the nose.
The following events occur in nervous system for detecting foul smell of garbage, ii, iii, i, iv, v
What is a Synapse? How is it useful in transfer information?
- Definition: Synapse is a functional region between two neurons where information from one neuron is transmitted or relayed to another neuron.
- Through synaptic region is with minute gaps it does not have any protoplasmic connection between them.
- Information is passed from one nerve cell to the other through these gaps either in the form of chemical or electrical signals or both.
a) Stimulus and Response
b) Afferent and Efferent nerves
c) Central nervous system and peripheral nervous system
d) Receptor and effector
a) Stimulus and Response
|1. It is the cause or change in organism’s surroundings that causes the organism to react||1. It is the act done by the organism.|
|2. Stimulus can not be alw