What does the cerebellum of brain control?
The cerebellum, a vital part of the brain, plays a key role in preserving body equilibrium, posture, balance orientation, coordinating voluntary movements, and sustaining muscle tone.
Very Short Answer
What is the importance of Corpora quadrigemina?
The corpora quadrigemina comprises four rounded structures, specifically the superior and inferior colliculi. The superior colliculi are responsible for visual reflexes, and the inferior colliculi handle auditory reflexes.
What is the function of red nucleus?
The red nucleus is crucial for regulating posture and muscle tone, altering certain motor activities, and facilitating motor coordination.
Name the organ which prevents the following the entry of food into the trachea while eating.
The epiglottis safeguards the trachea from ingested food during the process of eating.
Why is gas exchange very rapid at alveolar level?
Gas exchange occurs swiftly at the alveolar level due to the abundance of approximately 700 million alveoli in the lungs, creating a substantial surface area for efficient gaseous exchange.
Why is respiration in insect called direct respiration?
Insects respire directly through tracheal tubes, facilitating the exchange of oxygen and carbon dioxide with the haemocoel. This haemocoel, in turn, directly transfers these gases to the tissues for metabolic processes. The process is aptly termed “direct respiration” in insects due to this efficient exchange pathway.
Why does trachea have ‘C’shaped rings of cartilage?
C-shaped cartilage rings in the trachea prevent collapse by accommodating the adjacent esophagus.
What is grand period of growth?
The cumulative duration of growth phases in a cell or organ is termed as the grand period of growth.
Define photoperiodism.
Photoperiod, the duration of day and night, influences flowering in certain plants, dictating the seasonal bloom of flowers. Charles Darwin and his son Francis unveiled this natural phenomenon in 1880, recognizing sunlight’s role in triggering flowering cycles.
Define vernalization.
Vernalization is the process of exposing germinating seeds to low temperatures as a pretreatment, which is necessary for the flowering of certain plants.