Coordination and response Heartbeat rate Heartbeat Rate How

�� 与反� Coordination and response 心率 Heartbeat rate

Heartbeat Rate 心跳 速率 心跳 • How many times the heartbeats in a minute 测量 • 计算 脉搏 Measured by counting the pulse on the 手腕 wrist for a minute • Normal heart rate: 60 to 90 增加 • Pulse rate increase when doing heavy 作 task • 细胞的 More oxygen needed for cellular 呼吸 respiration • • Body temperature increase Sweating occurs to cool down the body

� 物的体内平衡 Homeostasis in Animals jian hong

Homeostasis in Animals (Cat) 流汗 • Can’t remove heat through sweating 爪 垫 • Most sweat glands on their paw pads 肉球 • Not enough 舔 毛发 • Always lick their fur 蒸发 口水 • Saliva evaporates

Homeostasis in Animals (Dog) 汗 分泌腺 肉球 • Sweat glands on the nose and paw pads 伸出 舌头 • stick out their tongue 口水 蒸发 • Allow saliva to evaporate from tongue

Homeostasis in Animals (Bee) 气孔 • reduce loss water through spiracles • closing the spiracles

Homeostasis in Animals (Reptiles) • In cold surrounding 活动 运动 慢 • activities and movement will be slower 基础代谢 减少 • metabolism rate will decrease • muscle work at a lower rate to reduce the 流失 heat loss

Homeostasis in Animals (Snail) 粘液 • Produce mucus 表层 • Coat their body 蒸发 • Reduces evaporation 遮蔽 潮湿 • Seek out shelter in damp places

� 物的体内平衡 Homeostasis in Animals 作� 与点名 Excercise

作� 与点名 • 作业与点名 • https: //forms. gle/oy. MLLe 7 r. Tmv. FZsn. N 6 • 网页 • https: //jianhongscience. wordpress. com/2020/04/15/homeostasis-inanimals/ • 影片讲解 • https: //youtu. be/1 X 9 j. Jg. EABa. E