Lecture 2 Flashcards
Structural hierarchy of human body
Atoms, molecules, organelles, cells(diff molecules), tissues(similar cells), organs(diff tissues), organ systems(diff organs), organism(diff organ systems)
All cells :
1.have plasma membrane
2.can harness materials and energy from enviro
3.have dna
4. Have cytoplasm
5.have ribosomes
Integumentary system
-Forms external body covering
- protects deeper tissues from injury
- synthesizes vitamin D
- location of sensory receptors and sweat/oil glands
Integumentary system components
Hair, skin, finger nails
Skeletal system
-protects/supports body organs
-provides framework for muscles
-stores minerals
-blood cells formed within bones
Skeletal system components
Cartilages, joints, bones
Muscular system
-allows manipulation of the enviro
-locomotion, facial expressions
-maintains posture
-produces heat
Muscular system components
Skeletal, cardiac, smooth muscles
Nervous system
-control system of body
-responds to external changes by activating muscles and glands
Nervous system components
Brain, sensory receptors, spinal cords, nerves
Endocrine system
Glands secrete hormones that regulate processed like growth, reproduction, nutrient use by cells
Endocrine system components
Pineal gland, pituitary gland, thyroid gland, thymus gland, adrenal gland, pancreas, testis, ovary
Cardiovascular system
-blood vessels transport blood which carries oxygen, nutrients, hormones, co2, wastes
-heart pumps blood
Cardiovascular system components
Heart, blood vessels
Lymphatic system
-picks up leaked fluids from vessels and returns it to blood
-disposes of debris in lymphatic stream
-houses WBC involved in immunity
