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Answer:
Sensory adaptation.
Explanation:
When the sensory receptors are exposed to a constant stimulus for a prolonged period, the receptors decrease their ability to respond and this leads to a decreased sensitivity of the stimulus. This phenomenon is referred to as sensory adaptation.
Sensory adaptation occurs in all of our five major senses. From taste to smell, touch, sight and hearing. This mechanism is used by the body to ignore trivial and unimportant stimuli and direct our attention to other stimuli around us.
Other examples of sensory adaptation are;
A) When we adapt to constant noise coming from a particular source such as a disco hall.
B) When we no longer notice the smell of our deodorants.
C)When the eyes adjust and adapt to a dark room.
As the exercise progresses, muscular activity increases venous return. This increases the pre-load on the right ventricle. During venous exercise, the rhythmic pump of the muscles facilitates venous return by forcing the blood through one way valves that lead to the heart. Additionally, increased lung activity which creates a change in thoracic pressure that draws blood towards the heart. Regular exercises improves the venous return by increasing total blood volume, increasing end diastolic volume and increasing the size and contractile strength of the heart muscle.
Answer:protonema
Explanation:
Mosses have protonema that develops from germinating spores,which is a multicellular filament. This filament has high chlorophyll content and hence can photosynthesis generating food for its growth.
A protonema may produce leafy shoot and this is done under a favourable condition, this shoot later develop into bud.