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Summary 5.1.5 Animal Responses - OCR a level biology £13.49
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Summary 5.1.5 Animal Responses - OCR a level biology

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a summary of animal responses, under topic 5.5 animal and plant responses of module 4 ocr a level biology

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  • October 5, 2022
  • 9
  • 2021/2022
  • Summary
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charlottegibbons
animal
RESPONSES

Themammalian nervous system consists of the pus and ons


d
neurones and
mainly relayneurones Cns
I PNS
connecting sensory to motor b I 1
Brain spine
I
Motor sensory
The Dns ensures communication between
The receptor cars and effector somatic autonomic

fight orflight
The sensoryfibres connect the sensory receptors
to the ens

The motor division consists of the somatic and autonomicsystem
and connects cns to effector

The somatic system controls the voluntary actions such as movement

using skeletal muscles This consists of mainly meylenated

The autonomic system controls involuntary actions such as glands and
smooth muscle and consists of mostly unmylienated neurones
with at least two neuron.es connecting to the effector

The autonomic is further divided into the pathetic preparation for
sy
activity and the parasympathetic conservation of energy

, The Brain
Mmmmm


Ygg
intelligence conciousthought andfactual memory

The cerebrum has two cerebralhemispheres
T.FM
fIfijfgii
pituatry



Joinedwith neuronal tracks called corpuscallosum
and the outermost layer is called the cerebralcortex

The medulla oblongata controls involuntary processes in 3 main areas
the
vasomotor controls blood pressure
Respiratory lungs and respiration
Cardiac heart cardiac muscles


Pituatrythypothalymus
Temperature regulation The hypothalamus detects changes in the core body
temperature and responds changes from receptors in skin


Osmoregulation The hypothalamus responds to receptors in the blood that
detect changes in water potential in the blood


The hypothalamus consists of two lobes the posterior which releases
hormones such as ADH which helps regulate water levels in the body


The anterior lobes produces its own hormones which releaseinto the
blood due to releasing factorsproduced in the blood

cerebellum
The cerebellum is responsible for coordination and balance in thebody
this involves actions such as
Judgement of distance
walking and running
coordination for instruments
muscle tension

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