Need To Know Flashcards
All life depends on these
Water, food, oxygen, heat, pressure
Both quality and quantity are major factors and very important
All living things HAVE these
Movement, growth, reproduction, responsiveness, respiration, digestion, absorption, circulation, assimilation(take things and change it) excretion
Negative feedback
Works to correct deviation from a set point( tries to get back to normal point)
When you body gets cold your body shivers to bring up the temperature and if it’s too warm the body will sweat to cool down due to evaporation
Blood pressure
Oxygen levels in the blood
Thirst sensations
Positive feedback
This is bad for your body, this changes from the normal point and amplifies it.
Example: blood clot formation; amplifies chemicals in the clot promote further clotting UNTIL its sealed.
Milk production; as long as the baby is nursing milk will be produced UNTIL babies done.
Uterine contractions during childbirth; contractions UNTIL the baby is out no more stimulus.
Fever; the body heats self to get rid of the virus/ bacteria UNTIL the enemy is destroyed
Need to know in order
- Atoms
- Molecules (H2O, O2, C6H12O6)
- organelles (nucleus, mitochondria, cell membrane)
- Cells (neutrons, blood cells)
- Tissues(muscles, skin, connective)
- Organs (heart, brain, liver, spleen)
- Organ system (respiratory, digestive)
- YOU
Physiology
Is a function, how your body works.
Anatomy
Is a structure
Anatomy and physiology
Anatomy provides clues about the function.
Stress and homeostasis
If conditions deviate, mechanisms responds to restore
Dorsal body cavity
Your back, more so your upper back where your “chicken wings are located “
Cranial cavity
Brain
Spinal cavity
Spine
Integumentary system
Skin hair nails, forms the external body covering and protects deeper tissue from injury
Skeletal system
Bones and joints, supports and protects the body’s organs. Provides a framework muscles use (movement) bones also store minerals and create blood cells.
Muscular system
Skeletal, muscles. Maintains posture and produces movement and produces heat
Lymphatic system
Red bone marrow, thymus, lymphatic vessels, thoracic duct, spleen, lymph nodes. Houses white blood cells involved in immunity. Returns leaked fluids from blood vessels to the blood and disposes within the lymphatic stream
Respiratory system
Nasal cavity, pharynx, larynx, trachea, bronchus, lung. Removes carbon dioxide and continually supplies blood with oxygen.
Digestive system
Oral cavity, esophagus, liver, stomach, small intestine, large intestine, rectum, anus. Breaks down food to be absorbed and eliminates indigestible waste
Nervous system
Brain, spinal cord, nerves, control system of the body responds to internal and external changes. Activates muscles and glands
Endocrine system
Pineal gland, pituitary gland, thyroid glands, thymus, adrenal glands, pancreas, ovary, testis. Glands from the endocrine system secrete hormones that regulates many processes like growth, metabolism, and reproduction.
Cardiovascular system
Heart, blood vessels. The heart pumps blood and blood vessels transports it. Blood carries oxygen and carbon dioxide, nutrients and waste and more throughout the body
Urinary system
Kidney, ureter, urinary bladder, urethra. Eliminates nitrogenous waste from the body. Regulates acid-base. Electrolytes and water balance of blood
Sagittal plane
Runs vertically through the body separating right and left portions
Median plane
Sagittal plane that passes through the midline of the body dividing it into equal rights and left halves
