Biol 109 Exam 1 Review with correct answers 100% 2026

Biol 109 Exam 1 Review with correct answers 100% 2026 Systemic Anatomy - Correct Answer anatomy of the systems of the body. skeletal system, reproductive system, ect. Regional Anatomy - Correct Answer anatomic study based on regions, parts, or divisions of the body Surface Anatomy - Correct Answer study of the external features of the body Homeostasis - Correct Answer Maintaining a constant environment; staying the same negative-feedback mechanism - Correct Answer reduces the fluctuations in the output. ex: thermostat that maintains temperature. positive-feedback mechanism - Correct Answer enhance the original stimulus. ex: blood clotting. Once a vessel is damaged, platelets start to cling to the injured site and release chemicals that attract more platelets. The platelets continue to pile up and release chemicals until a clot is formed. anatomical position - Correct Answer looking forward, palms facing forward. caphalic - Correct Answer towards the head. caudal - Correct Answer towards the tail ventral - Correct Answer towards the front or anterior. dorsal - Correct Answer relating to the back or posterior. posterior - Correct Answer back (opposite of anterior)(same as dorsal) medial - Correct Answer towards the midline lateral - Correct Answer towards the side proximal - Correct Answer closest to the main trunk of the body distal - Correct Answer away from the main trunk of the body superior - Correct Answer above deep - Correct Answer away from the surface supine - Correct Answer lying on the back, face up prone - Correct Answer lying face down transverse plane - Correct Answer split horizontally at the belly button sagittal plane - Correct Answer split vertically at the nose frontal (coronal) plane - Correct Answer split vertically front and back cranial cavity - Correct Answer cavity that contains brain thoracic cavity - Correct Answer cavity that contains heart and lungs vertebral cavity - Correct Answer cavity that contains spinal cord pelvic cavity - Correct Answer cavity that contains bladder, reproductive organs and rectum pericardial - Correct Answer around the heart Body Cavities - Correct Answer see image atom structure - Correct Answer protons(+), neutrons(neutral), electrons(-) activation energy - Correct Answer minimum energy needed to start a chemical reaction chemical bond - Correct Answer attraction between atoms that allows the formation of chemical substances covalent bond - Correct Answer a chemical bond that involves the sharing of electron pairs between atoms ionic bond - Correct Answer chemical bond that involves the electrostatic attraction between oppositely charged ions