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Flashcards in Chapter 1 Deck (32):
1

Anatomy

Study of bodily structure of living organisms

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Physiology

Study of how a body functions

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Organelle

Cell structure that performs a metabolic funtion

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Cell

Basic unit of life

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Tissue

Group of specialized cells, used for a specific function

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Organ

Body part made of 2 or more tissues that has a specific function

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Organ system

Group of organs that work together

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Organism

An individual living thing

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Metabolism

Sum total of the chemical reactions tat happen in the body

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Homeostasis

stable internal environment of the body

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Negative-feedback mechansim

Feedback that causes stimulus to decrese or stop

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Receptor

Peripheral nerve ending that is specialized for response to particular types of stimuli

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Control center

Determines the set point, or the level at which a variable is kept

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Effector

Organ, gland, or muscle that can be activated by a nerve ending

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Positive-feedback mechanism

Feedback that enhance the stimulus

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Anatomical position

Erect position of the body with the face forward, arms at the sides, and palms facing forwards, it;s used a reference for the relations of the body parts.

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Superior

Refers to upper body region

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Inferior

Position near tail end of the body

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Anterior

Front of an organism or part of ventral surface

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Posterior

Towards back plane of the body

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Sagittal plane

Vertical plane that divides the body to left and right

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Transverse plane

Horizontal plane that divides the body to superior and inferior

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Frontal plane

Vertical plane that divides the body to anterior and posterior

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Oblique plane

Any plane in the body that isn't parallel with the others

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Thoracic cavity

Chest cavity

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Abdominal cavity

Largest cavity in the body holds bulk of viscera

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Pelvic cavity

Cavity bounded by bones of the pelvis

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Serous membranes

Membrane that lines a cavity without an opening

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Pericardal cavity

Potential space formed between two layers of serous pericardium around the heart

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Pleural cavity

Closed space which the lung grows

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Peritoneal cavity

Potential space between the pariteal peritoneum and the visceral peritoneum.

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Mensentery

Double-layered membrane that supports most organs in the abdominal cavity