Module 2 - Anatomy and Physiology Flashcards
Plasma membrane
Separates the internal components of the cell from the surrounding environment
Essential to the life of the cell
Cytoplasm
Contains many suspended organelles, or cell structures
Medium for chemical reactions
Nucleus
Control center of the cell
Regulates cell activity
Houses genetic material
Nuclear membrane
Protects the nucleus, allowing in only specific materials
Nucleolus
Forms RNA and ribosomes
Mitochondria
Convert nutrients into energy for use by the cell/body; create adenosine triphosphate (ATP)
Ribosomes
Protein synthesis for both internal and external use
Endoplasmic reticulum
Transports materials throughout the cell
Golgi apparatus
Packages and releases materials secreted by the cell for external use
Forms lysosomes
Lysosomes
Digest waste materials including damaged materials found in the cell, old cell components, and materials entering the cell
Centrioles
Participate in cell reproduction through the distribution of DNA to new cells
Cilia
Aid in the movement of substances along the surface of the cell
Flagella
Move the cell itself, through a whip-like motion
five cavities and internal organs of human body
- Cranial cavity: Within thes skull; houses the meninges (brain)
- Spinal cavity: Traveling down the midline of the back and formed by the vertebrea, this contains the spinal cord
- Thoracic cavity: Within the chest; houses the lungs, heart, and major vessels
- Abdominal cavity: Within the abdomen; houses several major organs such as the stomach, liver, gallbladder, and intestines
- Pelvic cavity: houses the bladder and reproductive organs
What are the 9 quadrants of the abdomen?
- right/left hypochondriac region
- epi/hypo gastric region
- right/left lumbar region
- umbilical region
- right/left iliac region
Skin functions
- protection
- temperature regulation
- excretion
- sensation
- vitamin D production
Describe the layers of the skin
- Epidermis layer: Outermost layer of epithelial tissue, covers the external surface of the body
- Dermis layer: Thick layer beneath the epidermis that contains arteries, veins, nerves
- Subcutaneous layer: Loose, connective tissue composed of adipose tissue and lipocytes
Sebaceous (oil) glands
Produce sebum to keep skin and hair soft and prevent bacteria from growing on the skin
Sudoriferous (sweat) glands
Produce sweat to aid in cooling the body
Axial skeleton
The adult axial skeleton has 80 bones, including the skull, vertebrae, and ribs.
Appendicular skeleton
The adult appendicular skeleton has 126 bones, including arms, legs, and pelvic girdle.
Skeletal muscle
Responsible for body movement; also called voluntary muscle or striated muscle
Smooth muscle
Found within the walls of hollow organs and blood vessels and in the iris of the eye; also called involuntary muscle
Tendons
Ends of skeletal muscles that attach the muscle to a bone
Where is the thymus located
posterior to the sternum
What is the largest lymphoid organ?
spleen
Difference bw b-cells and T-cells
B-cells: Type of lymphocyte that can recognize antigens and responds by turning into plasma cells
T-cells: Type of lymphocyte that can recognize antigens and attaches to them to attack the invading cells directly
Naturally acquired active immunity
occurs when a person has an infectious disease and then develops antibodies against the pathogen that caused the disease.
Artificially acquired active immunity
result of administering a vaccination. The antibodies are activated by the vaccine and develop memory to recognize the pathogen in the future.
Naturally acquired passive immunity
short-lasting immunity transferred through the placenta and breast milk.
Artificially acquired passive immunity
created by giving an exposed person antibodies containing blood products, as in an immune globulin.
3 layers of the heart
- epicardium (outermost layer),
- myocardium (middle layer, thickest)
- endocardium (inner layer)
right atrium
receives deoxygenated blood from the superior and inferior vena cava
left atrium
receives oxygenated blood from the pulmonary veins
right ventricle
- Receives blood from the right atrium
- sends deoxygenated blood through the pulmonary valve.
- Then goes to the pulmonary artery and then to the lungs
left ventricle
- receives blood from the left atrium
- sends the oxygenated blood through the aortic valve to the aorta, and arteries that carry the blood to the body.
Kidneys
responsible for removing waste from the blood and producing urine
Ureters
tubes are responsible for carrying urine from the kidneys to the urinary bladder.
Urinary bladder
stores urine
Urethra
carrying urine from the urinary bladder to the outside of the body
sections of small instestine
- duodenum
- jejunum
- ileum
Large intestine
- colon
- completes absorption and forms feces from solid waste products.