Co-ordination And Response
Akopọ
Your body is constantly responding to changes both inside and outside it. When you step on something sharp, your foot lifts before you even feel pain. When your blood sugar rises after a meal, hormones bring it back down. Even a plant bending toward a window is co-ordinating a response. All of these examples depend on detecting a stimulus and producing an appropriate response.
In this lesson you will explore how the nervous and hormonal systems work, how the eye and reflex arcs function, how plants respond to light and gravity, and how the body maintains a stable internal environment through homeostasis. This is one of the broadest topics in the Edexcel specification and appears regularly on both papers.
Awọn Afojusun
- Understand how organisms are able to respond to changes in their environment
- Understand that homeostasis is the maintenance of a constant internal environment, and that body water content and body temperature are both examples of homeostasis
- Understand that a co-ordinated response requires a stimulus, a receptor and an effector
- Understand that plants respond to stimuli
- Describe the geotropic and phototropic responses of roots and stems
- Understand the role of auxin in the phototropic response of stems
- Describe how nervous and hormonal communication control responses and understand the differences between the two systems
- Understand that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves
- Understand that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses
- Understand the role of neurotransmitters at synapses
- Describe the structure and functioning of a simple reflex arc illustrated by the withdrawal of a finger from a hot object
- Describe the structure and function of the eye as a receptor
- Understand the function of the eye in focusing on near and distant objects, and in responding to changes in light intensity
- Describe the role of the skin in temperature regulation, with reference to sweating, vasoconstriction and vasodilation
- Understand the sources, roles and effects of the following hormones: adrenaline, insulin, testosterone, progesterone and oestrogen
- Understand the sources, roles and effects of the following hormones: ADH, FSH and LH
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Co-ordination And Response. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- In a reflex arc, which neurone connects the sensory neurone to the motor neurone? A) Effector neurone B) Relay neurone C) Receptor neurone D) Connector neurone Answer: B
- Which hormone lowers blood glucose levels? A) Glucagon B) Adrenaline C) Insulin D) ADH Answer: C
- When looking at a near object, the ciliary muscles: A) Relax, making the lens thin B) Contract, making the lens fat C) Relax, making the lens fat D) Contract, making the lens thin Answer: B
- What is the role of auxin in phototropism? A) It kills cells on the lit side B) It accumulates on the shaded side, causing those cells to elongate more C) It accumulates on the lit side, causing those cells to elongate more D) It prevents growth on both sides Answer: B
- Vasodilation helps the body to: A) Conserve heat B) Lose heat C) Absorb more oxygen D) Digest food faster Answer: B
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Co-ordination And Response? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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