首页
登录
职称英语
[originaltext] A number of insects rely on leaping or jumping as a way of es
[originaltext] A number of insects rely on leaping or jumping as a way of es
游客
2024-01-05
19
管理
问题
A number of insects rely on leaping or jumping as a way of escaping from enemies. Grosshoppers probably have the most remarkable jumping ability of all these insects. If we think of it in human terms, a grosshopper’s high jump is like a human jumping over a five story building. Imagine that a person jumping over a five story building. Well, we’ll take a look at the structure of grosshopper’s leg to see why it’s able to jump so well, but first I wanna talk about the sensory organ that tells grosshoppers when to jump in the first place. En, OK, a grosshopper has two sensory organs located at the end of its abdomen. Whenever these organs sense of change in air pressure which might be produced by an enemy approaching, and impulses transmitted to the legs, this first impulse deactivates the nerves that control normal working and sets the grasshopper’s jumping muscles into a sort of pre-jumping position. Now at this point, if the sensory organs don’t detect additional air pressure changes, the jumping muscles relax and a grosshopper goes back to its normal walking, but if the organs continue to send danger, another set of impulses put the jumping muscles in motion. The distance of the jumping is determined by just how many impulses are transmitted in the second set, the more impulse the longer the jump. OK now let’s see why the grosshopper can jump so far. Open your books at the part of that muscle structure of the grasshopper’s leg. I think it’s in chapter 9.
选项
A、They detect nerve impulses transmitted to a grasshopper’s legs.
B、They sense how far a grasshopper has jumped.
C、They detect changes in air pressure.
D、They help a grasshopper find food.
答案
C
解析
What is the function of the sensory organs that the professor discusses?
转载请注明原文地址:https://tihaiku.com/zcyy/3334999.html
相关试题推荐
CompletethesentencesbelowusingNOMORETHANTWOWORDS/ORANUMBERfromthe
Completethesummarybelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Completethesummarybelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Completethesummarybelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Completethesummarybelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Answerthequestionsbelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Answerthequestionsbelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Answerthequestionsbelow.ChooseNOMORETHANTWOWORDSAND/ORANUMBERfromt
Answerthequestionsbelow.ChooseNOMORETHANTHREEWORDSAND/ORANUMBERfrom
Answerthequestionsbelow.ChooseNOMORETHANTHREEWORDSAND/ORANUMBERfrom
随机试题
MountainClimbingMountainclimbing,orascendingmounta
AmericansEugeneFama,LarsPeterHansenandRobertShillerwontheNobelPr
2011年国内生产总值为()亿元。 A.469793.8 B.42368
在进行剧场建筑规划时,下列的原则中,哪项是不正确的?()A.剧场建筑从红线的
麻醉药的血液摄取决定于()A.肺活量 B.肺泡膜的通透性 C.血/气分配
根据风险的概率,及其风险发生的影响量对风险进行优先级排列的风险管理步骤是()。
患者男性,60岁,右下肢浮肿4年,1天前出现呼吸困难,并进行性加重,
2010年,该省的出口额比进口额约多:A.1070亿美元 B.1140亿美
下列事项中,有助于提高企业短期偿债能力的有()。A.利用短期借款增加对流动
常见的网络传输介质中,粗缆的特点包括()。A.传输距离长 B.性能好
最新回复
(
0
)