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The Human Body
Transcript of The Human Body
The muscular system is responsible for the movement of the human body.
Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person’s body weight.
Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.
Muscle tissue is also found inside of the heart, digestive organs, and blood vessels.
moves material through the body to the organs and cells that need them.
transported materials include...
nutrients and water from intestines to all cells of the body
oxygen from lungs to all of the body
hormones from glands to target cells
waste from all cells to the excretory glands
materials usually enter and leave the blood through diffusion
diffusion: process in which material moves from a high concentration to a low concentration
the heart is the pump that drives the circulatory system
red blood cells carry oxygen and carbon dioxide
hemoglobin: protein in red blood cells that carries oxygen
plasma is the fluid of the blood; it transports everything except oxygen
The integumentary system is an organ system consisting of the skin, hair, nails, and exocrine glands.
The skin is only a few millimeters thick yet is by far the largest organ in the body.
The average person’s skin weighs 10 pounds and has a surface area of almost 20 square feet.
Skin forms the body’s outer covering and forms a barrier to protect the body from chemicals, disease, UV light, and physical damage.
How your food gets chewed
What it does...
There are Main Parts to the Nervous System
The Nervous System
What the nervous system does
The nervous system regulates
your body with electrochemical
1. the chemical portion of a nerve impulse is called a neurotransmitter
2. neurotransmitters released by 1 nerve cell are received by receptor molecules in the cell membrane of the nerve cell
3. the shape of the receptor molecule determines which neurotransmitter it can receive...
The Brains Function:
The brain is the control center of your body and is made of billions of neurons. the brain has three main parts. the largest part is the cerebrum. the other two parts are the cerebellum, brain stem.
The steps of digestion:
Digestion starts with chewing and ends with the small intestate all the while passing through the GI tract and mixing food with digestive juices which breaks down the food.does that look good alisa?
What the spinal cord does:
The spinal cord and your brain are connected with nerves to the rest of your body. The spinal cord also helps in controlling blood pressure, heart rate, and the temperature of the body.
A nerve cell is also called a neuron. the main organs of the nervous system are the brain and the spinal cord. The spinal cord controls reflexes and relays impulses between the brain and the body.
breathing provides oxygen needed for cellular respiration(which carries the energy from sugar to make ATP)
excretes the waste co2 which is produced from cellular respiration
the diaphram is the muscle that allows breathing to occure
you breath faster when co2 builds up in the blood(not when you need oxygen)
the alveoli are microscopic sacs where oxygen enters the blood, and co2 exits the blood
the alveoli are surrounded by capillaries which pick up oxygen and drop off the co2
This system is used by our body to produce offspring.
There are two types of reproductive methods, such as Asexual and Sexual.
There are also two types of reproductive systems male and female.
Some organisms can have both but most just have one.
The two major “players” in this system are the sperm and the egg cells.
The immune and lymphatic systems are two closely related organ systems that share several organs and physiological functions.
The immune system is our body’s defense system against infectious pathogenic viruses, bacteria, and fungi as well as parasitic animals and protists.
The immune system works to keep these harmful agents out of the body and attacks those that manage to enter.
the excretory system:
the lymphatic system:
the skeletal system:
the endocrine system:
the nervous system:
the muscular system:
to be continued...
the reproductive system:
the circulatory system:
the respiratory system
The excretory system is the system of an organism's body that performs the function of excretion, the bodily process of discharging wastes.
The Excretory system is responsible for the elimination of wastes produced by homeostasis.
There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system.
Every human has two kidneys.
Each kidney is made up of three sections: the renal cortex, the renal medulla and the renal pelvis.
The blood arrives at the kidney via the renal artery, which splits into many afferent arterioles.
The skeletal system includes all of the bones and joints in the body.
Each bone is a complex living organ that is made up of many cells, protein fibers, and minerals.
The skeleton acts as a scaffold by providing support and protection for the soft tissues that make up the rest of the body.
The skeletal system also provides attachment points for muscles to allow movements at the joints.
New blood cells are produced by the red bone marrow inside of our bones.
Your endocrine system is a collection of glands that produce hormones that regulate your body's growth, metabolism, and sexual development and function.
The hormones are released into the bloodstream and transported to tissues and organs throughout your body.