第一章 单元测试

1、单选题：
The internal environment in which cells live within the body refers to（ ）
选项：
A:Lymph
B:Plasma
C:Extracellular fluid
D:Intracellular fluid
答案: 【Extracellular fluid】

2、单选题：
The main form of activity of the nervous system is （ ）
选项：
A:Adapt
B:Reflex
C:Regulation
D:Feedback
答案: 【Reflex】

3、单选题：
In a cold environment, the increased secretion of thyroid hormones is due to（ ）
选项：
A:Nervous regulation
B:Humoral regulation
C:Neuro-humoral regulation
D:Feedback
答案: 【Neuro-humoral regulation】

4、单选题：
The regulatory mechanism that plays an important role in maintaining homeostasis of the internal environment is（ ）
选项：
A:Adapt
B:Negative feedback
C:Positive feedback
D:All above not
答案: 【Negative feedback】

5、多选题：
The characteristics of neural regulation are ( )
选项：
A:Limited filed
B:Rapid
C:Longer duration
D:Short duration
答案: 【Limited filed;
Rapid;
Short duration】

第二章 单元测试

1、单选题：
In the process of gas exchange in the human body, the entry and exit of O₂ and CO₂ across the cell membrane occur through （ ）
选项：
A:Passive transport
B:Simple diffusion
C:Active transport
D:Endocytosis
答案: 【Simple diffusion】

2、单选题：
In the resting state, which of the following ions has the highest permeability across the cell membrane? （ ）
选项：
A:Ca2+
B:Cl-
C:Na+
D:K+
答案: 【K+】

3、单选题：
The neurotransmitter used for signal transmission at the neuromuscular junction between nerves and skeletal muscle is （ ）
选项：
A:Adrenaline
B:Acetylcholine
C:Gamma-aminobutyric acid
D:Dopamine
答案: 【Acetylcholine】

4、单选题：
The substances that hinder the binding of myosin filaments to actin during rest are （ ）
选项：
A:ADP
B:Tropomyosin
C:Troponin
D:Cross-bridges
答案: 【Tropomyosin】

5、单选题：
The initial length of the muscle depends on （ ）
选项：
A:Preload
B:Passive tension
C:Afterload
D:Frequency of contraction
答案: 【Preload】