问题 填空题 案例分析题

请回答下列有关人体生物活动调节的问题:

兴奋在神经纤维上以()形式向前传导。兴奋在突触的传递过程是:突触前神经元兴奋传至轴突末端,引起其中突触小泡与突触前膜融合,释放递质到(),递质与突触后膜上受体结合,导致突触后神经元兴奋或抑制。

答案

参考答案:电信号或生物电;突触间隙

解析:兴奋在神经纤维上以电信号进行传导;神经递质由突触前膜释放到突触间隙,作用于突触后膜,导致突触后膜兴奋或抑制。

阅读理解

阅读理解。

     Bill and his friends are going hiking this weekend. He's afraid he's going to be hungry,

so he buys a lot of food and his bag is big and heavy. They start at nine in the morning and

they get to the city five hours later. They're all tired and his friends get on a bus, but Bill

can't. His bag sticks in the door and he has to get off. The bus leaves and he doesn't know

where he's going to meet them. He walks in the street and when it's eight in the evening,

he goes into a restaurant. He asks for some drinks and soon begins to sleep.

     When he wakes up at the midnight, he can't find any people in the restaurant. The door

is closed and he can't go out. He finds a telephone number on a piece of paper and begins to

call Mr. Jackson, the owner of the restaurant.

     "Hello," says the boy, "When do you open your restaurant, Mr. Jackson?"

     The telephone wakes the man up and he isn't happy. So he says, "Don't ask me about

that. I won't let you in."  

     "Oh, no! I want to go out."

1. Bill's bag is big because _____. [ ]

A. there's a lot of clothes in it

B. he puts much food in it

C. he likes big bags

D. he takes many books

2. _____, so he's still at the bus stop. [ ]

A. Bill can't carry his bag onto the bus

B. Bill doesn't see his friends

C. Bill doesn't know which bus to get on

D. Bill wants to take another bus

3. Bill goes to sleep soon because _____. [ ]

A. he's very hungry

B. he is very tired

C. he eats too much in the restaurant

D. he doesn't know where to go

4. Mr. Jackson thinks _____.[ ]

A. Bill wants to sleep in his restaurant

B. Bill wants to go into the restaurant

C. Bill leaves his bag in the restaurant

D. Bill wants to go out of the restaurant

5. Which of the following is NOT true? [ ]

A. At 2 o'clock p.m., Bill and his friends get to the city.

B. Bill knows where they are going to meet.

C. When bill wakes up, he finds the door is closed.

D. Bill wants to go out, so he telephones Mr. Jackson.

填空题