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BIO101
1st Exam Concept Review
| Question | Answer |
|---|---|
| Anatomy | Study of the body Structure |
| Physiology | Study of the function of the body |
| Homeostasis | The maintenance of a constant internal environment |
| Control Center | Homeostatic mechanism maintains the "Set Point" & Makes decisions about how to return the system to that point |
| Role of Receptors in Homeostasis: | Receptors detect changes in the internal or external environment and send this information to the control center, helping initiate responses that restore homeostasis. |
| Layers of the Serous Membrane | Parietal layer & Visceral layer |
| Parietal layer | Lines the body cavity. |
| Visceral layer | Directly covers the organs |
| Planes Dividing the Body and Brain | Sagittal Plane, Mid Sagittal Plane, Coronal (frontal) Plane, Transverse(Horizontal)Plane |
| Sagittal Plane: | Divides the body into left and right portions. |
| Midsagittal Plane | Divides the body into equal left and right halves. |
| Coronal (Frontal) Plane | Divides the body into anterior (front) and posterior (back) regions |
| Transverse (Horizontal) Plane | Divides the body into superior (upper) and inferior (lower) sections. |
| Organs Located in the Mediastinum | The mediastinum contains the heart, trachea, esophagus, thymus gland, and major vessels such as the aorta and superior vena cava. |
| Anatomical Position | The anatomical position is standing upright, facing forward, with arms at the sides, palms forward, and feet flat and slightly apart. |
| Integumentary | Skin, hair, nails — protects the body. |
| Nervous | Brain, spinal cord, nerves — controls responses |
| Skeletal | Bones, cartilage — provides support |
| Muscular: Muscles | enables movement. |
| Digestive | Stomach, intestines — processes food. |
| Cardiovascular | Heart, blood vessels — transports blood. |
| Endocrine | Glands such as the thyroid — regulates hormones. |
| Reproductive | Ovaries or testes — produces offspring |
| Respiratory | Lungs, trachea — gas exchange. |
| Urinary | Kidneys, bladder — removes waste |
| Cervical | Neck region |
| Lumbar | Lower back |
| Cephalic | Head |
| Brachial | Upper arm |
| Antebrachial | Forearm |
| Femoral | Thigh |
| Plantar | Sole of the foot |
| Popliteal | Back of the knee |
| Abdominopelvic Regions: | ,Epigastric, Umbilical, Hypogastric , Right and Left Hypochondriac, Right and Left Lumbar, Right and Left Iliac (inguinal) |
| Major Cavities of the Axial Portion | Cranial cavity, Spinal cavity, Thoracic cavity, Abdominopelvic cavity |
| Cranial cavity | Contains the brain. |
| Spinal cavity | Contains the spinal cord. |
| Thoracic cavity | Contains the heart and lungs |
| Abdominopelvic cavity | Contains digestive and reproductive organs. |
| Structure Separating Thoracic and Abdominopelvic Cavities | The diaphragm |
| Protons | Positive charge |
| Electrons | Negative charge |
| Neutrons | No Charge |
| pH Scale Measurement | the concentration of hydrogen ions (H⁺) in a solution, indicating whether it is acidic or basic. |
| Acid pH | <7 |
| Basic pH | >7 |
| Neutral pH | 7 |
| pH of Human Blood: | 7.35–7.45 |
| Anion | Negatively charged (gains electrons) |
| Cation | Positively charged (loses electrons) |
| Ionic bond | Transfer of electrons between atoms. |
| Covalent bond | Sharing of electrons between atoms. |
| Hydrogen bond | Weak attraction between polar molecules. |
| Ion | varies by electron number (charge), |
| Isotope | varies by neutron number (mass). |
| Sugars and Starches Are Classified As | Carbohydrates, which serve as a major source of energy |
| Most Abundant Inorganic Substance in the Body: | Water |
| Lipids | insoluble in water, store energy, form cell membranes, and include fats, oils, and steroids. Most Common Lipid is triglycerides |
| Proteins Are Made Of | Proteins consist of amino acids linked together in specific sequences. |
| Nucleic Acid with a Double Chain | DNA |
| Saturated | No double bonds, solid at room temperature |
| Unsaturated | One or more double bonds, liquid at room temperature. |
| Major Components of the Cell Membrane: | phospholipids, proteins, and cholesterol; permeable mainly to lipid-soluble substances. |
| Cell Part That Directs Activities | The nucleus |
| Endoplasmic Reticulum | Synthesizes proteins (rough) and lipids (smooth) |
| Golgi apparatus | Modifies, packages, and ships these molecules. |
| Powerhouse of the Cell (mitochondrion) | produces ATP, the cell’s primary energy source. |
| Vesicles | Transport materials. |
| Lysosomes | Digest waste and foreign material |
| Endocytosis | Brings materials into the cell. |
| Exocytosis | Moves materials out of the cell |
| Phagocytosis | Cell eating” — large particles. |
| Pinocytosis | Cell drinking” — Small Particles fluids. |
| Hypotonic | Cell swells (water enters) |
| Hypertonic | Cell shrinks (water leaves) |
| Isotonic Solution | same solute concentration as the cell; no net water movement occurs. |
| Flagella | Long, few, used for movement |
| Cilia | Short, many, move materials across cell surfaces. |
| Diffusion | the net movement of molecules from an area of higher concentration to an area of lower concentration |
| facilitated diffusion | a type of passive transport that moves substances across a cell membrane with the help of transport proteins, |
| What Diffusion and Facilitated Diffusion Have in Common | Both move molecules from high to low concentration without energy input. |
| Synthesis phase | Chromosomes replicate |
| Cytokinesis | Is the division of Cytoplasm |
| Na/K pump | active transport |
| Osmosis | Specifically regarding the movement of water through aquaporins which are water channels between phospholipids of the cell membrane |
| Apoptosis | Programed cell Death as part of it’s life and Necrosis is Cell death because of damage |
| Cephalic | Head |
| Cervical | Neck |
| Thoracic | Chest |
| Abdominal | Stomach |
| Pelvic | Pelvis |
| Lumbar | Lower back |
| Gluteal | Buttocks |
| Pubic | Genital region |
| Femoral | Thigh |
| Crural | Shin |
| Sural | Calf |
| Pedal | Foot |
| Plantar | Sole of the foot |
| Inguinal | Groin |
| Antebrachial | Forearm |
| Manual | Hand |
| Superior | Above |
| Inferior | Below |
| Anterior | Front |
| Posterior | Back |
| Dorsal | Back |
| Ventral | Front |
| Superficial | Near the surface |
| Proximal | Closer to the point of attachment |
| Distal | Further away from the point of attachment |
| Medial | Near the midline |
| Lateral | Further away from the midline |
| Protons | Positive charge |
| Neutrons | No charge (neutral) |
| Electrons | Negative charge |
| Carbon | (C) |
| Hydrogen | (H) |
| Nitrogen | (N) |
| Oxygen | (O) |
| Phosphorous | (P) |
| Sulfur | (S) |
| Calcium | (Ca) |
| Sodium | (Na) |
| Potassium | (K) |
| Chlorine | (Cl) |
| Iron | (Fe) |
| Iodine | (I) |
| Magnesium | (Mg) |
| Lipids | These are molecules that are generally hydrophobic (insoluble in water) and include fats, oils, and steroids. |
| Hydrophobic | Refers to substances that repel water or do not mix well with water, essentially having a "fear" of water. |
| Hydrophilic | Refers to substances that can interact with water or "love" water, making them soluble in water. |
| triglyceride is made of | Glycerol and 3 fatty acids |
| nucleotides | The basic building blocks of nucleic acids, such as DNA and RNA |