Hormones
Bayani Gaba-gaba
Alongside the fast electrical signals of the nervous system, your body has a second messaging service: chemical messengers called hormones. They travel in the blood and switch on changes in distant organs, controlling everything from your heartbeat in a fright to your blood sugar after a meal.
In this lesson you will learn what a hormone is, name the main endocrine glands and the hormones they release, study adrenaline as the 'fight or flight' hormone, and compare nervous and hormonal control. These comparisons are classic exam questions.
Manufura
- Describe a hormone as a chemical substance, produced by a gland and carried by the blood, which alters the activity of one or more specific target organs
- Identify in diagrams and images specific endocrine glands and state the hormones they secrete, limited to: (a) adrenal glands and adrenaline (b) pancreas and insulin (c) testes and testosterone (d) ovaries and oestrogen
- Describe adrenaline as the hormone secreted in ‘fight or flight’ situations and its effects, limited to: (a) increased breathing rate (b) increased heart rate (c) increased pupil diameter
- Compare nervous and hormonal control, limited to speed of action and duration of effect
- [Supplement] State that glucagon is secreted by the pancreas
- [Supplement] Describe the role of adrenaline in the control of metabolic activity, limited to: (a) i ncreasing the blood glucose concentration (b) increasing heart rate
Darasin Sauti
Saurari wannan darasi a cikin manhaja
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Hormones. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- A hormone is a chemical substance that is: A. produced by a nerve and carried by impulses B. produced by a gland and carried by the blood C. made in the stomach and carried by ducts D. produced by a muscle Answer: B
- Which gland secretes adrenaline? A. pancreas B. ovary C. adrenal gland D. testis Answer: C
- Insulin is secreted by the: A. liver B. pancreas C. adrenal gland D. kidney Answer: B
- Which is an effect of adrenaline? A. decreased heart rate B. smaller pupils C. increased breathing rate D. slower breathing Answer: C
- Compared with nervous control, hormonal control is: A. faster and shorter-lasting B. slower and longer-lasting C. faster and longer-lasting D. slower and shorter-lasting Answer: B
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
-
Sashen littafi
Endocrine Glands
Describe the role of different glands in the endocrine system
"Biology: Endocrine Glands" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/37-5-endocrine-glands. Access for free at https://openstax.org/books/biology/pages/1-introduction
-
Sashen littafi
Regulation of Body Processes
Explain how hormones regulate the excretory system
"Biology: Regulation of Body Processes" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/37-3-regulation-of-body-processes. Access for free at https://openstax.org/books/biology/pages/1-introduction
Wasu ƙungiyoyi ne suka wallafa su ƙarƙashin lasisin buɗe, kuma muna ambaton su yadda suka nema. Hanyoyin suna buɗe shafukansu.
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Hormones? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
Sauke Manhajar Daga Google Playstore
Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
