cell function and structure
what is a cell
the basic unit of all living things-carries on all life processes
connective tissue
supports protects and binds together tissues of the body ex: bone cartilage ligaments tendons fascia blood and fat(adipose)
integumentary system
largest organ of the body first line of defense against infection and water loss regulates temperature perceives sensation produces vitamin D has absorption capabilities: consists of skin oil/sweat glands/sensory receptors hair and nails
nervous system
well organized system responsible for coordinating all the activities performed by the body
glands
specialized organs that produce chemicals including hormones necessary for various body systems to function optimally
nucleus
the dense active protoplasm found in the center of the cell
epithelial tissue
protective lining on cavities of the body and surfaces of organs ex: mucous membranes the lining of the heart digestive and respiratory digestive organs and glands
nervous
carries messages through the central nervous system controls and coordinates all bodily functions consists of the heart with the blood vessels
central nervous system
consists of brain spinal cord spinal nerves and cranial nerves-controls consciousness and the 5 senses
thyroid gland
located in the neck secretes hormones that regulate metabolism heart and digestive functions muscle control brain development and bone mass-needs iodine from the diet to function properly
mitochondria
takes in nutrients breaks them down creates energy for the cell
adipose tissue
fat
immune/lymphatic system
protects the body from disease by developing resistances and destroying disease causing toxins foreign material and bacteria (spleen and lymph)
autonomic nervous system
part of the nervous system that controls the involuntary muscles-regulates the action of the smooth muscles glands blood vessels heart and breathing
adrenal glands
located at the top of the kidneys assisting in the regulation of metabolism stress response and blood pressure support immune system health also affects melanization
mitosis
normal process of cell reproduction
muscle tissue
contracts and moves various parts of the body
endocrine
affects growth development sexual activities and normal regulatory process of the body: consists of specializes gland-adrenal pituitary and pancreas
motor nerves
carry impulses from the brain to the muscles or glands-produce movement
pineal gland
plays major roll in sexual development sleep and metabolism
metabolism
chemical process that takes place in living organism converts nutrients to waste and eliminates waste allows organisms to grow reproduce and maintain structures
nerve tissue
carries messages through the central nervous system to control and coordinate all body functions-nerve tissue is composed of special cells know as neurons which make up the nerves brain and spinal cord
circulatory
controls the steady delivery of the blood through the body works with the lymphatic channels: heart and blood vessels
peripheral nervous system
system of nerves that connects the peripheral (outer) parts of the body to the central nervous system-has both sensory and motor nerves
parathyroid gland
regulates blood calcium and phosphorus levels so the nervous and muscular systems function properly