Muscles Of The Head And Neck Review Sheet 13: Exact Answer & Steps

Muscles of the Head and Neck Review Sheet 13: Your Complete Study Guide

If you're staring at review sheet 13 and feeling overwhelmed by the sheer number of muscles you need to memorize, take a breath. In real terms, you've got this. The muscles of the head and neck seem like a lot at first glance — and honestly, they are — but once you understand how they're organized and what patterns to look for, everything clicks into place. This guide is here to help you see those patterns and actually retain what you need for your exam.

What Is Review Sheet 13?

Review sheet 13 is the classic anatomy study guide that covers all the muscles of the head and neck. It's the point where most anatomy students hit their first real wall of memorization. Unlike the simpler muscle groups you've likely already studied, the head and neck region contains dozens of muscles with overlapping functions, complex innervation patterns, and names that sometimes seem designed to confuse you.

Here's the thing — this review sheet isn't just about memorization. On top of that, it's about understanding relationships. Each muscle connects to specific bones, moves specific structures, and is supplied by specific nerves. When you see those connections, the memorization becomes almost automatic.

What's Actually On Review Sheet 13

The review sheet typically breaks down into several key areas:

• Muscles of facial expression — the ones that let you smile, frown, and raise your eyebrows
• Muscles of mastication — the powerful chewers that move your jaw
• Extraocular muscles — the tiny but precise movers of your eyes
• Muscles of the tongue — both intrinsic and extrinsic
• Muscles of the pharynx and soft palate — involved in swallowing and speech
• Muscles of the neck — including the complicated anterior and posterior triangles

That might look like a lot, but let's break it down further so you can actually study this efficiently.

Why These Muscles Matter

You might be wondering why your instructor is making you learn what seems like an excessive number of muscles in one region. Here's the real reason: the head and neck is where everything comes together.

These muscles are involved in virtually every basic human function. Breathing, eating, speaking, seeing — all of it depends on the nuanced coordination of these muscle groups. When you understand how they work, you understand why certain injuries or conditions cause specific problems. A patient who can't close their eye properly has a different nerve problem than one who can't raise their eyebrow, even though both involve the face.

Plus, these muscles are clinically huge. In real terms, the muscles of mastication are innervated by the trigeminal nerve (cranial nerve V), another clinical heavyweight. The facial nerve (cranial nerve VII) is one of the most commonly tested nerves in all of anatomy. Knowing these muscles well sets you up for success in every anatomy exam that comes after.

How to Organize Your Study

This is where most students go wrong. They try to memorize each muscle in isolation, and their brains simply can't hold all that separate information. Instead, organize your study around these three frameworks:

1. Group by Function

This is your biggest shortcut. Muscles that work together usually share names, locations, or at least patterns.

Muscles of facial expression all originate from fascia or bone of the skull and insert into skin. They all get innervated by the facial nerve (CN VII). This alone saves you from memorizing dozens of individual nerve supplies.

The muscles of mastication — temporalis, masseter, medial pterygoid, lateral pterygoid — all insert onto the mandible and are all innervated by V3 (the mandibular division of the trigeminal nerve). Four muscles, one nerve. That's a trade you'll take every time.

2. Group by Location

The neck muscles especially benefit from spatial organization. Think in triangles.

The anterior triangle of the neck contains muscles primarily involved in swallowing and speech, plus the infrahyoid muscles that depress the hyoid. The posterior triangle contains muscles that move the scapula and help stabilize the neck.

When you picture where muscles actually sit in the body, recall becomes much faster.

3. Group by Innervation

We're talking about your final organizational tool, and it's especially powerful for the head. In practice, cranial nerves III, IV, V, VII, IX, X, and XII all supply muscles in this region. If you know which nerve goes where, you can work backward to identify muscles.

For instance: anything innervated by the hypoglossal nerve (CN XII) is either an intrinsic tongue muscle or one of the extrinsic tongue muscles (genioglossus, hyoglossus, styloglossus). That's a whole category solved by knowing one nerve.

The Key Muscle Groups You Need to Know

Let me break down the major groups on review sheet 13 so you know exactly where to focus your energy.

Muscles of Facial Expression

These 17-ish muscles all share one thing: they insert into skin, not bone. They create movement by pulling on facial tissue, which is why damage to the facial nerve causes such noticeable problems — patients literally lose the ability to express emotion on one side of their face.

The key ones to know:

• Orbicularis oculi — closes the eye (think blinking, squinting)
• Orbicularis oris — closes the lips (kissing, whistling)
• Buccinator — compresses the cheek (playing trumpet, keeping food in your mouth while chewing)
• Zygomaticus major — pulls the corner of your mouth up (smiling)
• Frontalis — raises the eyebrows (surprise, worry)
• Platysma — tenses the skin of the neck (helps with jaw opening, grimacing)

The pattern here: think about what each muscle does, then picture someone with nerve damage who can't do that action. That's your memory hook.

Muscles of Mastication

Only four muscles, but they're powerful. These are the heavy lifters of chewing:

• Masseter — the obvious one everyone feels when they clench their jaw
• Temporalis — fans across the side of your skull above your ear
• Medial pterygoid — works with the masseter to elevate the mandible
• Lateral pterygoid — protracts the mandible and helps with side-to-side grinding movements

All four are innervated by V3. Remember that, and you've got this group locked down.

Continue exploring with our guides on words that start with y and have a c and words with d and q.

Extraocular Muscles

Six muscles per eye, and they control every movement your eye makes. Because of that, the four rectus muscles (superior, inferior, medial, lateral) do exactly what you'd guess — they move the eye in those directions. The two oblique muscles (superior and inferior) handle rotation.

Here's your clinical hook: the oculomotor nerve (CN III) supplies four of the six rectus muscles plus the inferior oblique. If someone has a nerve problem there, their eye position and movement will be specifically affected in predictable ways.

Tongue Muscles

Intrinsic muscles (superior longitudinal, inferior longitudinal, transverse, vertical) change tongue shape. Extrinsic muscles (genioglossus, hyoglossus, styloglossus, palatoglossus) move the tongue itself.

The hypoglossal nerve (CN XII) supplies all of them except palatoglossus, which gets innervated by the vagus nerve (CN X). That's a classic test detail — remember it.

Neck Muscles

The neck is where spatial organization really pays off.

Superficial cervical muscles include platysma (that thin sheet in your neck) and sternocleidomastoid — the one everyone knows, which rotates and flexes the head.

Anterior neck muscles organize around the hyoid bone. Suprahyoid muscles (mylohyoid, digastric, stylohyoid, geniohyoid) elevate the hyoid. Infrahyoid muscles (sternohyoid, sternothyroid, thyrohyoid, omohyoid) depress it. Together, they control the hyoid bone during swallowing.

Posterior neck muscles — splenius capitis, splenius cervicis, erector spinae groups — extend and rotate the head and neck. They're deeper and often get less attention, but they matter.

Common Mistakes Students Make

Let me save you some pain. Here's where most people studying review sheet 13 go wrong:

Trying to memorize before understanding. If you don't know why a muscle exists — what it does, what would happen if it stopped working — you'll forget it within 24 hours. Always start with function.

Ignoring the nerve supply. I can't stress this enough: the innervation patterns are your shortcuts. Every muscle on this review sheet connects to a specific nerve, and those connections follow rules. Learn the rules, not just the exceptions.

Skipping the origins and insertions. Yes, they're tedious. Yes, you need them. The origin and insertion tell you exactly what movement the muscle creates. If you skip this step, you're trying to memorize function without the foundation that makes function logical.

Studling in isolation. Don't make flashcards for each muscle separately. Group them. Compare them. That's how your brain holds this much information.

Study Strategies That Actually Work

Here's how to make this review sheet stick:

Draw it out. Don't just read — grab a blank sheet and sketch the muscles yourself. Start with the skull, add the key landmarks, and build up the muscle groups layer by layer. Your brain remembers spatial relationships.

Say them out loud. When you're trying to memorize the names, hearing yourself say them helps. Bonus points if you say what they do while you're saying the name.

Use mnemonics, but make your own. The ones in textbooks might not stick for you. Create associations that make sense to your brain. The weirder and more personal, the better. The details matter here.

Practice clinical correlations. Every time you learn a muscle, ask: "What goes wrong if this doesn't work?" That question transforms memorization into understanding.

Teach it. Explain a muscle group to an empty room, a pet, or a study partner. If you can explain it clearly, you know it well enough.

Frequently Asked Questions

How many muscles are actually on review sheet 13?

The exact number varies slightly depending on your textbook edition, but you're looking at roughly 50-60 muscles total when you count everything from facial expression through the neck. Don't get hung up on the exact count — focus on the groups.

What's the most important nerve to know for this material?

The facial nerve (CN VII) is probably the single highest-yield. But it innervates all muscles of facial expression, and the clinical implications of damage to this nerve appear constantly in exams. The trigeminal nerve (CN V) is a close second for the muscles of mastication. It's one of those things that adds up.

Do I really need to know every single origin and insertion?

You need to know enough to understand function. For smaller muscles, at least know the general area. Now, for major muscles (masseter, sternocleidomastoid, temporalis, orbicularis oculi, etc. ), know both origin and insertion. Your instructor will usually hint at what's testable.

How should I prioritize my study time?

Start with muscles of facial expression and mastication — they're high-yield and frequently tested. Then move to the tongue and neck muscles. Extraocular muscles are clinically important but often tested separately, so check if your exam groups them with the rest or treats them as their own unit.

What's the fastest way to tell similar muscles apart?

Location and function. If two muscles seem similar, the difference is almost always in exactly where they attach or exactly what movement they create. Use your cadaver lab or atlases to see the actual positions — that's more helpful than any written description.

The Bottom Line

Review sheet 13 is demanding, but it's not cruel. The muscles of the head and neck follow patterns — functional groups, nerve supplies, spatial relationships — and once you see those patterns, what felt like an impossible memorization task becomes something you can actually work through systematically.

Don't try to memorize everything at once. Pick one group, master it, then move to the next. Draw the muscles, say the names out loud, connect each one to what it does and what nerve controls it.

You've gotten through every anatomy exam so far. You'll get through this one too.