Human Anatomy and Physiology I Lab Exam 3 Review

This set of flashcards covers key terminology and definitions related to muscle tissues and various muscles of the body as identified in the lecture notes.

Skeletal muscle tissue

Striated muscle fibers that are voluntary and generate heat; contract to move bones.

Smooth muscle tissue

Non-striated muscle fibers that are involuntary, generate heat, and facilitate contraction of viscera to move substances.

Cardiac muscle tissue

Striated muscle fibers that are involuntary, generate heat, and contract to circulate blood.

Endomysium

Areolar connective tissue that covers and wraps around each individual skeletal muscle fiber.

Sarcoplasm

Cytoplasm of skeletal muscle fiber; serves as the site of metabolic reactions.

Triad

Structure that conducts nerve impulses and facilitates simultaneous contraction of skeletal muscle fibers.

Neuromuscular junction

The connection between a motor neuron and a skeletal muscle fiber, consisting of sarcolemma, motor end plate, and other components.

Occipitofrontalis (Epicranius)

Muscle that pulls the scalp forward and backward.

Zygomaticus major

Muscle that raises the lateral corners of the mouth to smile.

Temporalis

Muscle that closes the jaw as part of mastication.

Diaphragm

Muscle that contracts (flattens) during inhalation.

Biceps brachii

Muscle that flexes the elbow joint and supinates the forearm.

Quadriceps femoris

Muscle group that extends the knee.

Gastrocnemius

Muscle that performs plantar flexion of the foot.

Abductor hallucis

Muscle that abducts phalanx I of the foot.