There are two types of alveolar cells. The type I alveolar cells which lines the alveoli and much more abundant than type II alveolar cells. Then the type II alveolar cells lesser in number but functions differently than type I alveolar cells. Type II alveolar cells secrete surfactant (composed of lecitin and sphingomyelin) for the lungs. Surfactant reduces the surface tension inside the alveoli, preventing alveolar consolidation. This is important as babies with dysfunctional type II alveolar cells (usually preterm babies less than 32 weeks age of gestation) will have respiratory distress syndrome in the absence of surfactant.
NERVES CORE formed by combining the root of the ventral horns coming out of the front of the dorsal sensory root extending from the dorsal horn. <span>Cranial Nerves - 12 pairs. They extend symmetrically through the opening at the skull base. These nerves innervate the head, except for 10 and 11 Every nerve may be sensory, motor or mixed.</span>
Skully: visual, olfactory, oculomotor, trochlear, trigeminal abducens, facial, vestibulocochlear, glossopharyngeal wrong, sublingual
Function: receiving stimuli are responsible for memory and intelligence, stimulating muscle contraction head and neck allowing movement of the head, eyes, and tongue, and change facial expressions
Core: cervical, thoracic, lumbar, Cross, coccygeal
These functions:
- Receiving the stimuli from the skin, mostly on the trunk and extremities
- Stimulate the contraction of the trunk muscles primarily and ends
Answer:
A option
Explanation:
Guard cells closes their openings to prevent loss of water, hence, slowing down the process of transpiration.
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>
Answer:
Option D
Explanation:
Diagram is attached.
Capsid protein is a form of structural protein which usually forms part of a complex which later produces protective shell around the nucleic acid in a virus. It is also referred to as coat protein or head protein.
Capsid acts as a distinguishing feature for identifying an integrated viral genome, plasmids and other genetic material of viruses. In fact, viruses are termed as organisms that encode capsid proteins.
Hence, option D is correct
An example of an dramatic environmental event can be deforestation, or it can be animals losing their homes.
