• Tissues and Systems
1. Compare and contrast the 4 principal tissue types?
The four basic tissue types in the human body are: Epithelium, Connective, Muscle, and Nervous.
Epithelium is a single or multiple layers of flattened, cube-shaped or columnar cells which is a protective linings which covers interior or external surfaces of our organs while protecting, secretion, and absorption.
Connective server to connect and support tissues that bind and hold structures together by adhesion, while supporting, and insulating the attachment, and transportation.
Muscles are elongated cells that contract and shorten when stimulated which controls our movement.
Nervous are cells that transmit electrochemical impulses throughout the body creating rapid communication among those cells
Now that we know what they are we can see that one thing they all have common is there a type of tissues and cells, it also help the body work but by doing different functions and being in different locations. What I mean is all animals have tissues which have a common factor cells which are embedded in an extracellular matrix consisting of a ground substance and fibers. These extracellular matrix differ among the tissues in the epithelial and muscle tissues the cells are tightly packed and the matrix is small whereas the connective tissues the matrix takes up more space than the cells and the nervous has a water extracellular matrix. These tissues are known to be grouped in an embryonic origin. Epithelial is the only one that comes from three embryonic origin endoderm, ectoderm or mesoderm whereas the other three tissues only have one embryonic origin. Connective and muscle comes from mesoderm and the nervous comes from ectoderm.
2. List the levels o...
... middle of paper ...
... classifications of neurons we can understand how it functions. First starts at the sensory neuron that brings information from organs to the nervous system then inter-neurons connects the sensory neuron to the motor neurons or brain which send information back to the central nervous system to the muscles and glands on how to react.
3. Label a neuron diagram
Figure 24.5 pg 530
4. Is the following statement true or false? Explain. The sensory system only receives information from an organism’s external environment.
I believe this statement is false because our sensory system receives both external and internal information in an organism to maintain its life. It receives external from our eye, skin, smell, and ect. To monitor and detect changes but it receives internal from our muscles, organs, glands, and ect. which responds accurately to the external change.
The second layer of the skin is called the dermis and is also known as the middle layer. The dermis is what holds the body together. The dermis has layers to it as well as the epidermis. There are two layers to the dermis, the papillary layer and the reticular layer. The cells of the dermis are fibroblast, macrophages, mast cells, and scattered white blood cells (wbc’s). the dermis is richly supplied with nerve fibers and BV;s. dermal BV’s is also a part of the integumentary system, dermal BV,s have converging and diverging vessels that ar...
Briefly explain the process of neurotransmission. Neurotransmission starts with the neuron, the most important part of the central nervous system. A neuron contains a cell body, axon, and dendrites. When a neuron receives an electrical impulse, the impulse travels away from the cell body down the axon. The axon breaks off into axon terminals. At the axon terminals, the electrical impulse creates a neurotransmitter. The neurotransmitter is released into the synapse, a space between two neurons. If the neurotransmitter tries to stimulate a response of another neuron, it is an excitatory neurotransmitter. If the neurotransmitter does not stimulate a response of another neuron it is an inhibitory neurotransmitter. If a response is generated, the second neuron or postsynaptic neuron will receive an action potential at the site of the dendrite and the communication process will continue on. If a response is not generated, neurotransmitters left in the synapse will be absorbed by the first neuron or presynaptic neuron, a process known as reuptake. Neurotransmitters control our body functions, emotions, and
There are 4 different types of tissues in the human body, epithelial, connective, muscular and nervous. One of the main ones to look at with the lymphatic system is epithelial tissue. The epithelial tissues have many functions but the ones that affects the lymphatic system are diffusion and cleaning.
Our nervous system interacts with every other system in your body. The endocrine system works with our brain and central nervous system, to control the creation of specific hormones and enzymes. The digestive and excretory systems work with the nervous system in a conscious and unconscious ways. We can't tell our stomach where the food goes after we ingested it. The body is programed to function voluntarily and
Epithelia tissue : Epithelial tissue, the type of tissue that lines the surfaces and cavities of your body 's organs, epithelia may be composed of several layers of cells called compound epithelia or just a single layer known as simple epithelia.
The musculoskeletal system is made up of bones, muscles, cartilage, tendons, ligaments, joints and other connective tissue that supports and binds tissue and other organs together. Each muscle is a discreet organ constructed of skeletal muscle tissue, blood vessels, and nerves. Did you know there are roughly 600 organs that make up the muscular system? They include the cardiac muscles, smooth muscles, and skeletal muscles to name a few. The heart is the cardiac muscle. Smooth muscle are the tissues that line blood vessels and organs, such as the stomach and intestines. The skeletal muscles, which are the most well known and familiar of the muscle organ system, helps hold the skeletal frame work together. They make up bout 40 percent of the
Nerve cells generate electrical signals to transmit information. Neurons are not necessarily intrinsically great electrical conductors, however, they have evolved specialized mechanisms for propagating signals based on the flow of ions across their membranes.
The human brain and that of any species contains nerve cells that link to each other connecting the brain and spinal cord to the rest of the body (Johnson, 2013). These nerve cells are neurons that connected through synapses in a web-like fashion forming neural networks (Coon & Mitterer, 2001). Neural networks make generation and transmission of action potentials (known as electrical impulses) possible along neurons. An action potential is generated across an axon hillock of a nerve cell and is propagated along the axon by the opening of voltage-gated ion channels one after the other causing positive ions to flow in and out the axon (Johnson, 2013).
The nervous system is a network of cells that take messages from the brain and spinal cord to other parts of the body. The nervous system is made up of the Central Nervous System and the Peripheral Nervous System. The Central Nervous System has two main parts; the brain and the spinal cord. While the Peripheral Nervous System has the Somatic and the Autonomic Nervous systems included within it.
The brain consists of both neurons and glia cells. The neurons, which are cells housed in a cell body called a Soma, have branches which extend from them, referred to as dendrites. From these dendrites extend axons which send and receive impulses, ending at junction points called synapses. It is at these synapse points that the transfer of information takes place.
The nerves are made of neurons which are the cells that receive, process and transmit messages from one neuron to another. The nervous system is separated into two main parts; the central nervous system and the peripheral nervous system. The central nervous system is made up of the brain and the spinal cord. The second part of the nervous system is the peripheral nervous system which allows the central nervous system to communicate with the muscles, joints, glands and organs.
The three interconnected functions of the nervous system are sensory input, integration and motor output. Sensory input is the conduction of signals from sensory receptors to the central nervous system. Integration is the analysis and interpretation of the sensory signal and the formulation of appropriate responses. The motor output function is the conduction of signals from the integration centers to effector cells, which performs the body’s responses.
Nervous system is one of the major organ systems that is responsible for the coordination of biological activities inside the body through cells called neurons. It is composed of the brain and spinal cord which are surrounded by protective layers of bone and membrane tissues called meninges. There are two major divisions in the nervous system; first one is the central nervous system (CNS) and the other being the peripheral nervous system (PNS). The CNS is composed of the brain, spinal cord, and retina while the PNS includes the sensory neurons, ganglia, and connecting neurons. The nervous system applies control using nerves; almost as if sending a message by a telephone. The nervous system is fast due to its electrical nature. The nerve cells in this system are connected with each other in a complex manner where the neural pathways would be possible. Neural
Amsel, Sheri. [Webpage]. (2012). Anatomy Activities: Tissues - Epithelium, Muscle, Connective Tissue and Nervous Tissue. Exploring Nature Educational Resource. Retrieved from http://exploringnature.org/db/detail.php?dbID=21&detID=691
The human body is very complex. It is like a job. You have to do a million things in one day to make it through the day. The body uses nine systems to do all of those jobs. They all have separate functions, but some work together. Each system is also made up of organs. There are many ways to care and protect the systems from the many different problems they can have. There are also many interesting facts about each system.