Answer:
heart muscle
, skeletal muscle
, glandula and smooth muscle
Explanation:
The peripheral system distinguishes two major divisions: the afferent and the efferent. Afferent division is formed by the nerves that carry information to the central nervous system. In the efferent division the information travels from the central system to the effector organs, both muscular and other (including skeletal muscle, heart, glands, smooth muscle). Within the efferent division, in turn, two systems are distinguished, the somatic and the visceral or autonomous.
The somatic system conducts the signals that give rise to body movements and actions outside the body. It is formed by the fibers of the motor neurons that innervate the skeletal muscles; Their cell bodies are found in the spinal cord and a single axon reaches the muscle fibers it innervates. The action of these motor neurons always consists in the excitation and contraction of the muscles, although muscular activity can be inhibited by inhibitory synapses in charge of central system neurons.
The visceral system is formed by the fibers that innervate the smooth muscles, the heart, the glands and other non-motor organs or tissues, such as brown fat. It controls functions that are mainly related to the maintenance of internal environment conditions and also certain automatic responses to external stimuli. Regulates visceral activities such as circulation, digestion, thermoregulation.
A "hypothesis" is just an idea or proposal which someone comes up with
to try and explain a given set of observations. A hypothesis must be:
a)
falsifiable/disprovable
b) testable
c) have predictive value, in
order to be taken seriously by scientists, and to begin its journey
towards the status of "theory".
If it is an interesting proposal and is
deemed to possess these 3 criterion, scientists will start to
investigate it: what can it predict, what does it explain, is it
compatible with all the relevant data/observations? If it is supported
by enough experiments and/or observations, and gains acceptance by
enough of the "scientific establishment" (ie, by enough scientists who
are accepted and admired by their peers), at some undefinable point it
becomes a "theory". It can still be disproven at any time, but until
that happens it will remain a "theory" and may even graduate to the
status of "well supported theory", such as the theory of gravity or
relativity. At NO point, however, is ANY theory ever considered by
scientists to have been "proven": in the scientific world, all truth is
"relative". and provisional.
A= U, G= C, T= A You can reverse it as well to find the codons
Prokaryotic cells are small in size (<5um). eukaryotic cells are larger (>10um). prokaryotic cells are always unicellular, whereas eukaryotic cells are often multicellular. prokaryotic cells have no nucleus or any otber membrane bound organelles such as mitochondria, and eukaryotic cells always have a nucleus and other membrane bound organelles. prokaryotic DNA is circular without proteins and eukaryotic DNA is linear and is associated with proteins to form chromatin. prokaryotic cells have small ribosomes and eukaryotic cells have large ribosomes. prokaryotic cells have no cytoskeleton but eukaryotic cells do. prokaryotic cells are mostly rigid by rotating flagellum (made of flagelin) and eukaryotic cells are mostly flexible by waving cilia or flagella (made of tubulin). prokaryotic crlls division is by binary fission and is always asexual, and eukaryotic is meiosis or mitosis and is asexual or sexual. prokaryotic cells have a huge variety of metabolic pathways, but eukaryotic cells have only common metabolic pathways
