Anatomy & Physiology 1 (biol 2401) Chapter 1

Anatomy refers to the study of the structure and form of living organisms, while function, color, and chemistry are not the primary focus of anatomy.

Physiology is the branch of biology that deals with the normal functions of living organisms and their parts.

Anatomical variability refers to the differences in both external and internal anatomy among individuals, highlighting the uniqueness and diversity present in human bodies.

Palpation specifically refers to the act of feeling the body surface with hands to assess things like pulses and breathing rates. The incorrect answers involve different medical techniques like listening to heart sounds, measuring blood pressure, and taking x-ray images, which are not part of palpation.

Auscultation specifically refers to listening to internal sounds of the body, usually using a stethoscope. The other options do not accurately describe auscultation.

Percussion in the context of the question refers to a medical technique used by healthcare professionals to assess the underlying structures of the abdomen and thorax by tapping on the surface of the body.

An autopsy specifically refers to the examination of a body after death to determine the cause of death or to gather medical information.

A disorder refers to a derangement or abnormality in the function of an organism or body part, typically with detrimental effects.

A disease is an abnormal condition that affects the body of an organism. It is often characterized by specific signs and symptoms, and can be caused by factors such as pathogens, genetic mutations, or environmental factors.

A sign is an objective change that is quantifiable and can be verified through observation and measurement, which distinguishes it from subjective interpretations or symbols.

A symptom is a subjective change in body functions that a person experiences but is not apparent to an observer. This can include feelings of pain, fatigue, or dizziness, among others.

A diagnosis involves identifying a particular disease or condition by distinguishing it from other similar conditions. It is a crucial step in determining the appropriate treatment plan for a patient.

The levels of organization in biological systems start from the smallest unit, which is the chemical level, and progress to higher levels of complexity.

The organ systems in the human body include Muscular, Reproductive, Lymphatic, Respiratory, Integumentary, Nervous, Skeletal, Urinary, Digestive, Endocrine, and Cardiovascular. Circulatory, Immune, and Excretory are not part of the organ systems listed.

The correct necessary life functions are essential processes that living organisms must carry out to maintain life, such as maintaining internal and external environments, movement, assimilation, responsiveness, digestion, metabolism, excretion, reproduction, circulation, respiration, differentiation, and growth. Sleeping, singing, and gaming are not generally accepted necessary life functions.

The five basic life survival needs include nutrients, oxygen, water, normal body temperature, and normal pressures for the body to function properly.

The correct components of control are Receptor, Control Center, and Effector which work together in a feedback mechanism.

A receptor is a specialized cell or group of cells that detects a specific stimulus in the internal or external environment and transmits information to the brain or spinal cord.

A control center interprets signals received from sensors and maintains the desired set point by adjusting actuators accordingly.

An effector is a component of a biological system that responds to a stimulus. It can be a muscle, a gland, or even a single cell. The effector carries out the response directed by the control center in order to restore homeostasis.

A local disease is limited to a specific area or organ system in the body, unlike systemic diseases that affect multiple areas. Examples include localized infections or injuries.

A systemic disease is one that affects multiple organs and tissues in the body, or affects the body as a whole. It is not limited to just one specific area or organ. Therefore, options 2 and 3 are incorrect as they do not capture the breadth of impact of systemic diseases.

Negative feedback loops are essential in maintaining homeostasis and regulating various biological processes.

Positive feedback loops intensify the changes happening in a system, leading to destabilization. This is in contrast to negative feedback loops, which work to counteract changes and maintain system equilibrium.

Intracellular fluid (ICF) refers to the fluid found inside cells, whereas extracellular fluid is found outside cells. It is important for maintaining cell function and overall bodily function.

Extracellular fluid (ECF) is the fluid found outside of cells in the body, which includes interstitial fluid and blood plasma. It is distinct from intracellular fluid, which is found inside cells.

Extracellular matrix is a structure surrounding cells but not part of ECF, Intracellular fluid is within the cell not part of ECF, and Synovial fluid is specific to joints not ECF.