SL/HL Topic C3.1 Integration of body systems - 无忧得胜-网上国际课程 (5edu.win)

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1#

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1. Which endocrine gland secretes mela ylw fmpz0+u hh2+b 3iy0ur4c2tonin?

A. Pineal

B. Pituitary

C. Hypothalamus

D. Adrenal

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2#

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2. Which of the following are functions of the cerebellup-xyp*4x qpf( tkve4hr-.f g8 m?
I. Coordination of skeletal muscle contraction.
II. Voluntary movement of the limbs.
III. Maintenance of balance.
IV. Perception of pain.

A. All of the above.

B. I and III only.

C. II and IV only.

D. I only

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3#

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3. Which of the following occudm ,fd: p750ccusn kc4r following the release of epinephrine (adrenalin),u4k:ndpfds cc7 5 mc0?
I. Increase in blood pressure.
II. Conversion of glucose to glycogen in muscle cells.
III. Decrease in blood circulation to the intestines.
IV. Dilation of the bronchioles.

A. All of the above.

B. II and III only.

C. I and IV only.

D. I, III and IV only

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4#

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4. Which area of the brain initiates voluntary stimum rr,r3liumyx1f +xi0zf(* ge 3)z+jjlation of skeletal muscle?

A. Cerebral hemispheres.

B. Corpus callosum.

C. Medulla.

D. Cerebrum.

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5#

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5. The diagram shows a spinal reflex arc. The redx ,iyi/r2a8 w).meohr arrows show the direction of the nerve impulsexa.ri 8/h2eiym o) ,rws.
In the table below, give the labels of the numbered components of the reflex arc and outline their function.

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6#

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6. Outline the role of the following in the control of the heart rate.

I. Baroreceptors

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7#

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6. Outline the role of the following in the control of the heart rate.

II. Chemoreceptors

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8#

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6. Outline the role of the following in the control of the heart rate.

III. The medulla of the 8 e82xf yjry/pbrain

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9#

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7. Discuss the voluntary and involuntary roles of the nervous syrdep1gd +kxo5fnf w0/vqga g :kh3; 62fhk5;ystem in the movement of food into, throa 5vk d g+/gf e6;qx3:hhk kywd2og0prf1n5;fugh and out of the intestines.

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10#

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8. A rise in blood pH, caused by an .rr0*fiquk k/ awix,b8(, ur*za eat) increase in carbon dioxide concentration, will cause an increase in breathing rate and tida /u)ex( akkw,iutraz*8 rrf0.* qabi ,l volume. This often occurs during exercise.

Outline how feedback control mechanisms restore the breathing rate and tidal volume to resting levels while resting after exercise.

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11#

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9. Plant growth is coordinated by various signalling chemicals. These chemicals cause growth responses which require a coordinated response. Outline how coordination is achieved in the following responses:

a. Fruit ripening and ethene (jbm xw/g 8i4kfzq20d: ethylene) production.

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12#

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9. Plant growth is coordinated by various signalling chemicals. These chemicals cause growth responses which require a coordinated response. Outline how coordination is achieved in the following responses:

b. Auxin secretion into the apoplast and developmwtty- +vs2hc*grnuav2ixdn80nf-(j p )1:i gent of plant cells.

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13#

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9. Plant growth is coordinated by various signalling chemicals. These chemicals cause growth responses which require a coordinated response. Outline how coordination is achieved in the following responses:

c. Shoot and root growth a*r3 9(vvsd ,woniq*iz nd development

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14#

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9. Plant growth is coordinated by various signalling chemicals. These chemicals cause growth responses which require a coordinated response. Outline how coordination is achieved in the following responses:

d. Auxin effluent pumps and the positive phototropic respv o6z e*3b(kn8ex o/mlonse of a stem.

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