生理学 知到智慧树答案2024 z39794

绪论 单元测试

1、

The regulation mode and characteristic of three physiological functions in human body？

A:Nervous regulation: rapid, accurate (reflex arc). 
B:Humoral or neuro-humoral regulation: slow, extensive (secretion).  
C:Self regulation: small, limited. 
D:All of the above three.
答案: All of the above three.

第一章 单元测试

1、

The AV node, which normally exhibits the fastest rate of autorhythmicity is known as the pacemaker of the heart.

A:对
B:错
答案: 错

2、

Bulk flow occurs because of differences in the hydrostatic and colloid osmotic pressures between the plasma and interstitial fluid.

A:对
B:错
答案: 对

3、

Which of the following correctly ranks pressures during isovolumetric contraction of a normal cardiac cycle?

A: left ventricular > aortic > left atrial
B: aortic > left atrial > left ventricular
C: left atrial > aortic > left ventricular
D:aortic > left ventricular > left atrial
E:left ventricular > left atrial > aortic
答案: aortic > left ventricular > left atrial

4、

When the radius of the resistance vessels is increased, which of the following is increased? 

A:Systolic blood pressure  

B:Diastolic blood pressure  

C:Viscosity of the blood  

D: Hematocrit  

E: Capillary blood flow

答案:  Capillary blood flow

5、

 What is mainly responsible for the delay between the atrial and ventricular contractions?

A: the shallow slope of AV node pacemaker potentials

B:slow action potential conduction velocity of AV node cells

C:slow action potential conduction velocity along atrial muscle cell membranes

D:slow action potential conduction in the Purkinje network of the ventricles

E:greater parasympathetic nerve firing to the ventricles than to the atria

答案: slow action potential conduction velocity of AV node cells

第二章 单元测试

1、

Cholesterol is found within the lipid bilayer 

A:对
B:错
答案: 对

2、

The greater the difference in concentration, the slower the rate of net diffusion.

A:对
B:错
答案: 错

3、

Opposite charges attract each other.

A:对
B:错
答案: 对

4、

Cholesterol contributes to the fluidity and stability of the membrance, Between which molecules is cholesterol found?

A:membrane proteins
B:membrane carbohydrates
C:cell adhesions molecules 
D:phospholipids.
答案: phospholipids.

5、

Membrane potential is measured in these units 

A:volts 
B:nanovolts 
C:Kilovolts
D:millivolts
答案: millivolts

第三章 单元测试

1、

These filaments are arranged in cylindrical bundles called myofibrils.

A:对
B:错
答案: 对

2、

T tubules store calcium.

A:对
B:错
答案: 错

3、

In skeletal muscle, magnesium must be attached to ATP before myosin ATPase can split the ATP

A:对
B:错
答案: 对

4、

Which of the following is the functional unit of a skeletal muscle? 

A:Glogi organ
B:thick filaments 
C:sarcomere
D:sliding filaments
答案: sarcomere

5、

Which of the following ions binds to calmodulin in smooth muscles? 

A:magnesium
B:calcium 
C:potassium
D:sodium e all of the above
答案: calcium 

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