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Why are some nerves called afferent nerves and others are called efferent nerves- how do they differ in function?
Afferent nerves are those that send impulses from the PNS to the CNS. Efferent nerves send impulses from the CNS to the PNS. So the first goes toward the Central Nervous System and the second goes away from it.
Which animal phylum was the first to have a circulatory system?
The first animal phylum to have a circulatory system was the Annelida phylum, specifically the earthworm. Annelids have a closed circulatory system composed of blood vessels that transport nutrients and oxygen throughout the body.
What structure passes through the suboccipital triangle?
The vertebral artery passes through the suboccipital triangle, along with the first cervical nerves (C1) and suboccipital muscles such as the rectus capitis posterior major and minor, and the obliquus capitis superior and inferior.
What phylum is Paramecium?
Paramecium belongs to the phylum Ciliophora, which is characterized by the presence of cilia used for movement and feeding.
What is the acronym for the cranial nerves?
On old Olympus towering tops a Finn and German viewed some hopps
Why do you dissect the nerves last in a frog?
Dissecting the nerves last in a frog allows you to examine the muscles and organs first, which can give you a better understanding of how the nervous system interacts with the rest of the body. It also ensures that the nerves are not accidentally damaged during the initial dissection process.
How are cnidarians an improvement upon poriferans?
well defined true tissue level of organization first to move having primitive muscles and nerves, becomes first active predator
Is a horse a phylum or class?
First things first: there is no such thing as an "ecological phylum". A phylum is a taxonomic term. Horses are in the Phylum Chordata, and the Subphylum Vertebrata. They are in the Class Mammalia.
What ecological phylum or class is a horse?
First things first: there is no such thing as an "ecological phylum". A phylum is a taxonomic term. Horses are in the Phylum Chordata, and the Subphylum Vertebrata. They are in the Class Mammalia.
Is it true or false that earthworms and leeches are members of the same phylum?
Yes, it is true. Both Leeches and Earthworms have round bodies and are members of the phylum Annelida. The common name of this phyla is "roundworms". Their body structure is an important evolutionary link as they are the first group of animals with blood vessels. They are also the first segmented animals and have both circular and longitudinal muscles in their body cavity.
I have weak arm's muscles since I am under diabetes and high blood pressure medicineWhat I suppose to do?
Your medicine has made you weak just like it has a whole lot of other people. The first thing you are supposed to do is discuss it with your doctor. After that you will do some weight training and put some resistance against your muscles. You will probably never get to the point where you will stand on a stage. That is not your goal. Your goal is to get stronger arm muscles. You are going to teach different nerves to take over from your damaged nerves so you have more strength. You will join a gym or get rehab where you will learn the proper exercises to exercise your arm muscles and the rest of your body. That process will teach other nerves how to take over and do the job not being done so your muscles will work. A good trainer will know the exercises.
Why are some nerves called afferent nerves and others are called efferent nerves- how do they differ in function?
Afferent nerves are those that send impulses from the PNS to the CNS. Efferent nerves send impulses from the CNS to the PNS. So the first goes toward the Central Nervous System and the second goes away from it.
How many pairs of spinal nerves are in the spinal cord?
There are 31 pairs of spinal nerves in the spinal cord.The human peripheral nervous system has 31 pairs of spinal nerves.31there r 31 spinal nerves in a body31There are 31 total spinal nerve pairs8 pairs are cervical nerves12 pairs are thoracic nerves5 pairs are lumbar nerves5 pairs are sacral nervesI know that only adds up to 30. I don't know what the other pair is.31 pairs
Which plexus of the spinal cord consists of one pair of nerves?
The cervical plexus consists of one pair of nerves, specifically the first cervical nerve (C1). It primarily supplies the muscles and skin of the neck and is involved in several reflexes and functions, including controlling the diaphragm via the phrenic nerve.
Which tooth innervated by two alveolar nerves?
The first molar is usually innervated by two alveolar nerves: the superior alveolar nerves from the maxillary division of the trigeminal nerve.
Does division or phylum come first?
hi Division is just the alternative for phylum when referring to plants and fungi.
First phylum to venture into air?
Arthropods.
