Kpk Board General Science Unit 1

human-organ-system-class-8-General-Science

Class 8th General Science Unit 1, Human Organ System

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General Science

General Science Class 8th

General Science Class 8th, Unit 1, Human Organ System

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1. Human brain bony case

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2. Three pounds/ 1300-1400 gram

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3.

Three layers of connective tissue:

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4.

The largest part of the brain consists of three parts: crbrm, thlms, and hypothalamus.

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The largest part of the brain.Control center of sensory areas?

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Learning, thinking, intelligence, memory, and voluntary movements are concerned:

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Thalamus is a small structure inside:

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Processing center between the body and the cerebrum by receiving sensory information:

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Regulates body temperature, hunger, and thirst.

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control some reflexes such as changing the size of the pupil to control the amount of light entering the eye.

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the second-largest part of the brain

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Posture(مقام) balance and locomotion of the body.

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Rate of breathing, sleeping, regulate eye movement and facial expressions.

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control heartbeat, swallowing, vomiting, coughing, sneezing, digestion and breathing.

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15. A small oval structure above the medulla serves as a bridge for the conduction of impulses between the cerebrum, medulla, and cerebellum.

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Keep on working when the rest of the brain doesn't work.

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Consists of 12 pairs of cranial nerves, and 31 pairs of spinal nerves.

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Two parts, cell body, and axon.

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— is a thicker region and has a nucleus

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20.

 Threadlike projection on the cell body.

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Receive messages

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A long projection that carries impulses away from the cell body.

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23.

Transmit messages in the form of electrochemical.

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Present in the central nervous system, link the sensory and motor neurons.

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25.

The special organ, tissue, or cells which detect stimuli are called

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26.

An immediate and involuntary response to a stimulus is called reflex action

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Pathway of nerve impulses which complete a reflex action

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28.

blink about 15 times per minute. 16 hours 14,400 in a day.

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29. Medium-sized stones are removed by _____.

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30. Cleaning of blood by artificial methods is called____, done by a machine called a dialyzer.

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31. ____ are the treatment for renal failure.

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32. Urine is formed in the tubules of ____  and drains out into the Renal pelvis.

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33. _____ consists of three parts i.e proximal, loof of Henle, and distal tubule.

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34. _____  at its tip connected with renal Tubule.

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35. _____ is a cluster of blood capillaries formed by the division and subdivision of small arteries.

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36. the first part of the nephron is ____ consist of two structures, i.e Glomerulus and Bowman's capsule.

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37. _____ has two parts, i.e renal corpuscle, and renal tubules.

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38. ____ are the structural and functional units of the kidney.

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39. The urine from ____ moves into the ureter.

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40. is the inner area where urine is drained.

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41. Internally, ____ is divided into three regions i.e renal cortex, renal medulla, and renal pelvis.

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42. The outer surface of the kidney is convex while the inner surface is

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43. _____ produce Nitrogenous Materials, salts, and carbon dioxide as by product of metabolic breakdown of sugars, fats, and proteins.

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