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2021-05-14

What type of tissue do you think makes up the three layers of membrane you encountered in your muscle?

What type of tissue do you think makes up the three layers of membrane you encountered in your muscle?

connective tissues

Where are the 3 types of muscle tissue found?

The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control.

What are the 3 connective tissue layers of muscle?

There are three layers of connective tissue: epimysium, perimysium, and endomysium. Skeletal muscle fibers are organized into groups called fascicles.

What do all muscle tissues have in common?

All muscle tissues have 4 characteristics in common: excitability. contractility. extensibility – they can be stretched.

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What are the 5 characteristics of muscle tissue?

Terms in this set (5)

  • Excitability- can be stimulated by chemical signals, nerves and stretch.
  • Conductivity- the signal for a muscle to contract is spread from the point of stimulation throughout the entire muscle.
  • Contractility- ability of the muscle to shorten.
  • Extensibility-
  • Elasticity-

What are 5 types of muscle movements?

  • Flexion and Extension. Flexion and extension are movements that take place within the sagittal plane and involve anterior or posterior movements of the body or limbs.
  • Abduction and Adduction.
  • Circumduction.
  • Rotation.
  • Supination and Pronation.
  • Dorsiflexion and Plantar Flexion.
  • Inversion and Eversion.
  • Protraction and Retraction.

What are the 3 major types of muscles?

The three main types of muscle include:

  • Skeletal muscle – the specialised tissue that is attached to bones and allows movement.
  • Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries.
  • Cardiac muscle – the muscle specific to the heart.

What are the 3 functions of muscles?

Muscles allow a person to move, speak, and chew. They control heartbeat, breathing, and digestion. Other seemingly unrelated functions, including temperature regulation and vision, also rely on the muscular system.

Is the tongue two muscles?

There are two groups of muscles of the tongue. The four intrinsic muscles alter the shape of the tongue and are not attached to bone. The four paired extrinsic muscles change the position of the tongue and are anchored to bone.

What muscles control the tongue?

The genioglossus muscle helps move the tongue out of the mouth. The hyoglossus muscle moves the tongue down to flatten it. The styloglossus muscle retracts the tongue back into the mouth and elevates it.

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Which nerve moves the tongue?

The Hypoglossal Nerve is the 12th Cranial Nerve (Cranial Nerve XII). It is mainly an efferent nerve for the tongue musculature.

What nerves affect the tongue?

The hypoglossal nerve is the twelfth cranial nerve, and innervates all the extrinsic and intrinsic muscles of the tongue, except for the palatoglossus which is innervated by the vagus nerve. It is a nerve with a solely motor function.

What nerve goes to the tongue?

The hypoglossal nerve (CN XII) provides motor innervation to all of the intrinsic and extrinsic muscles of the tongue except for the palatoglossus muscle, which is innervated by the vagus nerve (CN X).

How do you know if you have nerve damage in your tongue?

LN Injury Symptoms Changed sensation in the tongue, chin, or lower lip areas (similar to sensations you feel when your oral cavity is numbed for a dental procedure or as the anesthesia slowly wears off) Altered ability to taste. Difficulty speaking or eating. Pain that might be experienced as a burning sensation.

Does tongue have nerves?

The tongue has many nerves that help detect and transmit taste signals to the brain. Because of this, all parts of the tongue can detect these four common tastes; the commonly described “taste map” of the tongue doesn’t really exist.

Which cranial nerve is responsible for taste to the posterior 1/3 of the tongue?

The three nerves associated with taste are the facial nerve (cranial nerve VII), which provides fibers to the anterior two-thirds of the tongue, the glossopharyngeal nerve (cranial nerve IX), which provides fibers to the posterior third of the tongue, and the vagus nerve (cranial nerve X), which provides fibers to the …

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Which cranial nerves are responsible for swallowing?

The cranial nerves associated with the swallowing process are the trigeminal (V), facial (VII), glossopharyngeal (IX), vagus (X), accessory (XI) – usually not considered – and hypoglossal (XII).

What is the taste pathway?

Three nerves carry taste signals to the brain stem: the chorda tympani nerve (from the front of the tongue), the glossopharyngeal nerve (from the back of the tongue) and the vagus nerve (from the throat area and palate).

Which cranial nerves are important for speech and swallowing?

The trigeminal nerve is essential to different aspects of speech, hearing, and swallowing. It is located in the pons of the brainstem. It is mixed cranial nerve, having both sensory and motor components.

What happens if cranial nerves are damaged?

Symptoms. Symptoms of cranial nerve disorders depend on which nerves are damaged and how they were damaged. Cranial nerve disorders can affect smell, taste, vision, sensation in the face, facial expression, hearing, balance, speech, swallowing, and muscles of the neck.

How many muscles and cranial nerves does it take to swallow?

Cranial nerves, whose axons leave from the brainstem, are the lower motor neurons for the vast majority of muscles involved in swallowing, coughing, and respiration. There are 12 pairs of cranial nerves (see below), each with a left and ride side. Swallowing is controlled by both cortical and brainstem regions.

Which cranial nerves are responsible for Eye Movement?

Cranial nerves III (CNIII) (oculomotor), IV (trochlear), and VI (abducens) control the position of the eyeballs; CNIII influences the position of the eyelids and the size of the pupils.