Studied by 2 peopleNerves
________ conduct impulses away from the spinal cord and brain to muscles and glands for response.
Sensory Receptors
________ send nerve impulses to control centers in the brain, which then direct effectors (muscles or glands) to become active.
Schwann Cells
________ are a type of neuroglia that form a protective coating called myelin sheath on axons.
Endocrine
________ glands secrete hormones that bring about slower, more lasting changes that keep the internal environment relatively stable.
Kidneys
________ remove metabolic wastes and regulate blood volume, salt balance, and pH.
Biologists
________ have categorized animal tissues into four major types: epithelial, connective, muscular, and nervous.
Epithelium Lining
The bladder's ________ helps store urine and prevents leakage.
Neuron
________ has three parts: dendrites, cell body, and axon.
Fertilization
________ of an egg by a sperm leads to the development of offspring.
Myelin Sheaths
________ insulate axons and allow nerve impulses to travel more quickly.
Hemoglobin
________ makes the cells red and binds oxygen to transport it to cells.
Transports Nutrients
Blood ________ and oxygen to cells and removes their wastes.
Platelets
________ form a plug that seals a damaged blood vessel and release molecules that help the clotting process.
Respiratory System
The ________ consists of the lungs, trachea, and other structures that take air to and from the lungs.
Internal Environment
The sensor detects a change in the ________ (stimulus)
Cells
________ live in interstitial fluid, which is constantly renewed with nutrients and gases via exchanges with the blood.
Body Temperature
The thermostat for ________ is located in the hypothalamus.
Negative Feedback Mechanism Prevents
A(n) ________ continued change in the same direction.
Matrix
________ in blood is not made by the cells of connective tissue.
Thermostat
The ________ also has a control center that turns the furnace off when the room is warm and turns it on when the room is cool.
Home Heating System
A(n) ________ is used to illustrate a negative feedback mechanism.
Negative Feedback Mechanism
The ________ is present when the output of the system dampens the original stimulus.
Nervous System
The ________ activates the sweat glands, and the evaporation of sweat helps lower body temperature.
Spinal Cord
The brain and ________ contain many neurons, while nerves contain bundles of axons.
Collagen
________ is mainly used for structural support.
Organs
________ are composed of multiple tissues.
Lymph Nodes
________ help purify lymph and keep it free of pathogens.
Negative Feedback
________ is the primary homeostatic mechanism that maintains internal environment stability.
Cartilage
________ is later replaced by bone, except in cartilaginous fishes like sharks.
Homeostasis
________ keeps internal conditions within a narrow range despite external changes.
Dendrites
________ conduct signals toward the cell body.
Fibroblasts
________ are the cells that produce a matrix containing fibers, including collagen fibers and elastic fibers.
Endocrine System
The ________ consists of hormonal glands, such as the thyroid and adrenal glands, which secrete hormones.
Smooth Muscle
________ is named because the cells lack striations and form layers in which the thick middle portion of one cell is opposite the thin ends of adjacent cells.
Epithelial Tissue
________ forms external coverings and internal linings of many organs and covers the entire surface of the body.
Reproductive System
The ________ involves different organs in males and females.
Rigid Connective Tissue
Bone is the most ________ and consists of an extremely hard matrix of inorganic salts, primarily calcium salts, deposited around collagen fibers.
Cardiac Muscle
________ is found only in the walls of the heart, and its contraction pumps blood and accounts for the heartbeat.
Excess Glucose
The liver regulates the glucose concentration of the blood, removes ________ from the blood for storage as glycogen, and makes urea, a nitrogenous end product of protein metabolism.
Nervous Tissue
________ coordinates body functions and responses to internal and external environments.
Axon
________ conducts nerve impulses away from the cell body to other cells.
White Blood Cells
________ fight infection, and platelets participate in the clotting process.
Hyaline Cartilage
________ is found in the nose, ends of long bones and ribs, respiratory passages, and the fetal skeleton.
Lymphatic Capillaries
________ collect excess interstitial fluid and return it via lymphatic vessels to the cardiovascular system.
External Environment
________: everything outside the body.
Muscular Tissue
________ and nervous tissue work together to enable animals to move.
Squamous Epithelium
________ is composed of thin, flattened cells.
Cells
The basic unit of life is a ________.
Epithelial Tissue
________ is a type of tissue that covers the body's surfaces and lines its cavities.
Connective Tissue
________ is a type of tissue that binds, supports, and protects other tissues and organs.
Ligaments
________ are bands of fibrous tissue that connect bones to each other.
Cartilage
________ is a type of connective tissue that is more flexible than bone.
Bone
________ is a type of connective tissue that is hard and strong.
White Blood Cells
________ are a type of blood cell that helps the body fight infection.
Platelets
________ are small cell fragments that help the blood clot.
Muscular Tissue
________ is a type of tissue that is responsible for movement.
Skeletal Muscle
________ is the type of muscle that is attached to bones and allows us to move our bodies.
Cardiac Muscle
________ is the type of muscle that makes up the heart.
Endocrine System
The ________ is a system of glands that produces hormones.
Homeostasis
________ is the ability of the body to maintain a stable internal environment.
Note
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